Cusco (Spanish: Cusco, Cuzco [ˈkusko]; Quechua: Qusqu, Qosqo [ˈqʊsqʊ], [ˈqɔsqɔ]), is a city in southeastern Peru, near the Urubamba Valley of the Andes mountain range. It is the capital of the Cusco Region and of the Cusco Province. In 2017, the city had a population of 428,450. Located on the eastern end of the Knot of Cusco, its elevation is around 3,400 m (11,200 ft).

The site was the historic capital of the Inca Empire from the 13th until the 16th-century Spanish conquest. In 1983, Cusco was declared a World Heritage Site by UNESCO with the title "City of Cusco". It has become a major tourist destination, hosting nearly 2 million visitors a year. The Constitution of Peru designates it as the Historical Capital of Peru.^[2]

The indigenous name of this city is Qusqu. Although the name was used in Quechua, its origin is found in the Aymara language. The word is derived from the phrase qusqu wanka ('Rock of the owl'), related to the city's foundation myth of the Ayar Siblings. According to this legend, Ayar Awqa (Ayar Auca) acquired wings and flew to the site of the future city; there he was transformed into a rock to mark the possession of the land by his ayllu ("lineage"):^[3]

The Spanish conquistadors adopted the local name, transliterating it into Spanish phonetics as Cuzco or, less often, Cozco. Cuzco was the standard spelling on official documents and chronicles in colonial times,^[5] though Cusco was also used, pronounced as in 16th-century Spanish, seems to have been a close approximation to the Cusco Quechua pronunciation of the name at the time.^[6] As both Spanish and Quechuan pronunciation have evolved since then, the Spanish pronunciation of 'z' is no longer close to the Quechuan pronunciation of the consonant represented by 'z' in "Cuzco". In 1976, the city mayor signed an ordinance banning the traditional spelling and ordering the use of a new one, Cusco, in municipality publications. Nineteen years later, on 23 June 1990, the local authorities formalized a new spelling related more closely to Quechuan: Qosqo.

There is no international, official spelling of the city's name.

In English-language publications both "s"^[7][8] and "z"^[9][10] can be found. However, the Oxford Dictionary of English recognizes "Cuzco" but not "Cusco";^[11] with "Cusco" only as a "variant";^[12] and in scholarly writings "Cuzco" is employed more often than "Cusco".^[13] The city's international airport code is still CUZ, reflecting the earlier Spanish spelling.

The Killke people occupied the region from 900 to 1200, prior to the arrival of the Inca in the 13th century. Carbon-14 dating of Saksaywaman, the walled complex outside Cusco, established that Killke constructed the fortress about 1100. The Inca later expanded and occupied the complex in the 13th century. In March 2008, archaeologists discovered the ruins of an ancient temple, roadway and aqueduct system at Saksaywaman.^[14] The temple covers some 2,700 square feet (250 square metres) and contains 11 rooms thought to have held idols and mummies,^[14] establishing its religious purpose. Together with the results of excavations in 2007, when another temple was found at the edge of the fortress, this indicates a longtime religious as well as military use of the facility.^[15]

Cusco was long an important center of indigenous people.

It was the capital of the Inca Empire (13th century – 1532). Many believe that the city was planned as an effigy in the shape of a puma, a sacred animal.^[16] How Cusco was specifically built, or how its large stones were quarried and transported to the site remain undetermined. Under the Inca, the city had two sectors: the urin and hanan. Each was divided to encompass two of the four provinces, Chinchasuyu (NW), Antisuyu (NE), Kuntisuyu (SW) and Qullasuyu (SE). A road led from each quarter to the corresponding quarter of the empire.

Each local leader was required to build a house in the city and live part of the year in Cusco, restricted to the quarter that corresponded to the quarter in which he held territory.

After the rule of Pachacuti, when an Inca died, his title went to one son and his property was given to a corporation controlled by his other relatives (split inheritance). Each title holder had to build a new house and add new lands to the empire, in order to own land for his family to keep after his death.

According to Inca legend, the city was rebuilt by Sapa Inca Pachacuti, the man who transformed the Kingdom of Cusco from a sleepy city-state into the vast empire of Tawantinsuyu.^{[17] [666666]} Archaeological evidence, however, points to a slower, more organic growth of the city beginning before Pachacuti. The city was constructed according to a definite plan in which two rivers were channeled around the city. Archaeologists have suggested that this city plan was replicated at other sites.

The city fell to the sphere of Huáscar during the Inca Civil War after the death of Huayna Capac in 1527. It was captured by the generals of Atahualpa in April 1532 in the Battle of Quipaipan. Nineteen months later, Spanish explorers invaded the city after kidnapping and murdering Atahualpa (see Battle of Cusco), and gained control because of their arms and horses, employing superior military technology.

The first three Spaniards arrived in the city in May 1533, after the Battle of Cajamarca, collecting for Atahualpa's Ransom Room. On 15 November 1533 Francisco Pizarro officially arrived in Cusco. "The capital of the Incas... astonished the Spaniards by the beauty of its edifices, the length and regularity of its streets." The great square was surrounded by several palaces, since "each sovereign built a new palace for himself." "The delicacy of the stone work excelled" that of the Spaniards'. The fortress had three parapets and was composed of "heavy masses of rock". "Through the heart of the capital ran a river... faced with stone.... The most sumptuous edifice in Cuzco... was undoubtedly the great temple dedicated to the Sun... studded with gold plates... surrounded by convents and dormitories for the priests.... The palaces were numerous and the troops lost no time in plundering them of their contents, as well as despoiling the religious edifices," including the royal mummies in the Coricancha.^{[18] [666666]}

Pizarro ceremoniously gave Manco Inca the Incan fringe as the new Peruvian leader.^[18][666666]

Pizarro renamed it the "very noble and great city of Cuzco".

Buildings constructed after the Spanish invasion have a mixture of Spanish influence with Inca indigenous architecture, including the Santa Clara and San Blas neighborhoods.

The Spanish destroyed many Inca buildings, temples and palaces.

They used the remaining walls as bases for the construction of a new city.

Father Vincente de Valverde became the Bishop of Cusco and built his cathedral facing the plaza. He placed a St. Dominic monastery on the ruins of the House of the Sun and a nunnery where the House of the Virgins of the Sun was stood.^{[18] [666666]}

The city was retaken from the Spanish during the Siege of Cusco of 1536 by Manco Inca Yupanqui, a leader of the Sapa Inca. Although the siege lasted 10 months, it was ultimately unsuccessful. Manco's forces were able to reclaim the city for only a few days. He eventually retreated to Vilcabamba, the capital of the newly established small Neo-Inca State, which lasted for another 36 years but he was never able to return to Cusco. Throughout the conflict and years of the Spanish colonization of the Americas, many Incas died of smallpox.

Cusco stands on layers of cultures, with the Tawantinsuyu (old Inca Empire) built on Killke structures and the Spanish replacing indigenous temples with Catholic churches and palaces with mansions for the invaders.

Cusco was the center for the Spanish colonization and spread of Christianity in the Andean world. It became very prosperous thanks to agriculture, cattle raising and mining, as well as its trade with Spain. The Spanish colonists constructed many churches and convents, as well as a cathedral, university and Archbishopric.

After Peru declared its independence in 1821, Cusco maintained its importance within Peru's administrative structure.

Upon independence, the government created the Department of Cusco, maintaining authority over territory extending to the Brazilian border. Cusco was made capital of the department; subsequently it became the most important city in the south-eastern Andean region.

At the beginning of the 20th century, the city's urban sprawl spread to the neighboring districts of Santiago and Wanchaq.

In 1911, explorer Hiram Bingham used the city as a base for the expedition in which he rediscovered the ruins of Machu Picchu.

A major earthquake on 21 May 1950 caused the destruction of more than one third of the city's structures.

The Dominican Priory and Church of Santo Domingo, which were built on top of the impressive Qurikancha (Temple of the Sun), were among the affected colonial era buildings. Inca architecture withstood the earthquake. Many of the old Inca walls were at first thought to have been lost after the earthquake, but the granite retaining walls of the Qurikancha were exposed, as well as those of other ancient structures throughout the city. Restoration work at the Santo Domingo complex exposed the Inca masonry formerly obscured by the superstructure without compromising the integrity of the colonial heritage.^[20] Many of the buildings damaged in 1950 had been impacted by an earthquake only nine years previously.^[21]

Since the 1990s, tourism has increased.

Currently, Cusco is the most important tourist destination in Peru.

Under the administration of mayor Daniel Estrada Pérez, a staunch supporter of the Academia Mayor de la Lengua Quechua, between 1983 and 1995 the Quechua name Qosqo was officially adopted for the city.

Cusco extends throughout the Huatanay (or Watanay) river valley.

Located on the eastern end of the Knot of Cusco, its elevation is around 3,400 m (11,200 ft).

To its north is the Vilcabamba mountain range with 4,000–6,000-metre-high (13,000–20,000-foot) mountains. The highest peak is Salcantay (6,271 metres or 20,574 feet) about 60 kilometres (37 miles) northwest of Cusco.^[23]

Cusco has a subtropical highland climate (Köppen Cwb). It is generally dry and temperate, with two defined seasons. Winter occurs between April to September, with abundant sunshine and occasional nighttime freezes; July is the coolest month with an average of 9.7 °C (49.5 °F). Summer occurs between October and March, when the weather turns cloudy and wet; November is the warmest month which averages 13.3 °C (55.9 °F). Although frost and hail are common, the last reported snowfall was in June 1911. Temperatures usually range from 0.2 to 20.9 °C (32.4 to 69.6 °F), but the all-time temperature range is between −8.9 and 30 °C (16.0 and 86.0 °F). Sunshine hours peak in July; the equivalent of January in the Northern Hemisphere. In contrast, February, the equivalent of August in the Northern Hemisphere, has the least amount of sunshine.

Cusco was found in 2006 to be the spot on Earth with the highest average ultraviolet light level.^[24]

Tourism has been the backbone to the economy starting in the early 2000s, bringing in more than 1.2 million tourists per year.^[29] In 2002, the income Cusco received from tourism was US$837 million.

In 2009, that number increased to US$2.47 billion.

The indigenous Killke culture built the walled complex of Sacsayhuamán about 1100. The Killke built a major temple near Saksaywaman, as well as an aqueduct (Pukyus) and roadway connecting prehistoric structures. Saksaywaman was expanded by the Inca.

The Spanish explorer Pizarro sacked much of the Inca city in 1535. Remains of the palace of the Incas, Qurikancha (the Temple of the Sun) and the Temple of the Virgins of the Sun still stand. Inca buildings and foundations in some cases proved to be stronger than the foundations built in present-day Peru. Among the most noteworthy Spanish colonial buildings of the city is the Cathedral of Santo Domingo, Cusco.

The major nearby Inca sites are Pachacuti's presumed winter home, Machu Picchu, which can be reached on foot by the Inca Trail to Machu Picchu or by train; and the "fortress" at Ollantaytambo.

Less-visited ruins include: Incahuasi, the highest of all Inca sites at 3,980 m (13,060 ft);^[30] Vilcabamba, the capital of the Inca after the capture of Cusco; the sculpture garden at Ñusta Hisp'ana (aka Chuqip'allta, Yuraq Rumi); Tipón with working water channels in wide terraces; as well as Willkaraqay, Patallaqta, Chuqik'iraw, Moray, Vitos and many others.

The surrounding area, located in the Watanay Valley, is strong in gold mining and agriculture, including corn, barley, quinoa, tea and coffee.

Cusco's main stadium Estadio Garcilaso de la Vega was one of seven stadiums used when Peru hosted South America's continental soccer championship, the Copa América, in 2004. The stadium is home to one of the country's most successful soccer clubs, Cienciano

The city is served by Alejandro Velasco Astete International Airport.

Because of its antiquity and importance, the city center retains many buildings, plazas, streets and churches from colonial times, and even some pre-Columbian structures, which led to its declaration as a World Heritage Site by UNESCO in 1983. Among the main sights of the city are:

This neighborhood houses artisans, workshops and craft shops.

It is one of the most picturesque sites in the city.

Its streets are steep and narrow with old houses built by the Spanish over important Inca foundations.

It has an attractive square and the oldest parish church in Cusco, built in 1563, which has a carved wooden pulpit considered the epitome of Colonial era woodwork in Cusco.

The Quechua name of this neighborhood is Tuq'ukachi, which means the opening of the salt.

This street is the most visited by tourists.

On the street Hatun Rumiyoq ("the one with the big stone") was the palace of Inca Roca, which was converted to the Archbishop's residence.

Along this street that runs from the Plaza de Armas to the Barrio de San Blas, one can see the Stone of Twelve Angles, which is viewed as a marvel of ancient stonework and has become emblematic of the city's history.

Its foundation dates from 1536.

The first complex was destroyed by the earthquake of 1650.

Its rebuilding was completed in 1675.

Its cloisters of Baroque Renaissance style, choir stalls, colonial paintings and wood carvings are highlights, now a popular museum.

Also on view is an elaborate monstrance made of gold and gemstones that weighs 22 kg (49 lb) and is 130 cm (51.18 in) in height.

The first cathedral built in Cusco is the Iglesia del Triunfo, built in 1539 on the foundations of the Palace of Viracocha Inca. Today, this church is an auxiliary chapel of the Cathedral.

The main basilica cathedral of the city was built between 1560 and 1664.

The main material used was stone, which was extracted from nearby quarries, although some blocks of red granite were taken from the fortress of Saksaywaman.

This great cathedral presents late-Gothic, Baroque and plateresque interiors and has one of the most outstanding examples of colonial goldwork.

Its carved wooden altars are also important.

The city developed a distinctive style of painting known as the " Cusco School" and the cathedral houses a major collection of local artists of the time. The cathedral is known for a Cusco School painting of the Last Supper depicting Jesus and the twelve apostles feasting on guinea pig, a traditional Andean delicacy.

The cathedral is the seat of the Archdiocese of Cusco.

Known as the "Square of the warrior" in the Inca era, this plaza has been the scene of several important events, such as the proclamation by Francisco Pizarro in the conquest of Cusco.

Similarly, the Plaza de Armas was the scene of the death of Túpac Amaru II, considered the indigenous leader of the resistance.

The Spanish built stone arcades around the plaza which endure to this day.

The main cathedral and the Church of La Compañía both open directly onto the plaza.

This church (Church of the Society of Jesus), whose construction was initiated by the Jesuits in 1576 on the foundations of the Amarucancha or the palace of the Inca ruler Wayna Qhapaq, is considered one of the best examples of colonial baroque style in the Americas.

Its façade is carved in stone and its main altar is made of carved wood covered with gold leaf.

It was built over an underground chapel and has a valuable collection of colonial paintings of the Cusco School.

The Qurikancha ("golden place") was the most important sanctuary dedicated to the Sun God (Inti) at the time of the Inca Empire. According to ancient chronicles written by Garcilaso de la Vega (chronicler), Qurikancha was said to have featured a large solid golden disc that was studded with precious stones and represented the Inca Sun God – Inti. Spanish chroniclers describe the Sacred Garden in front of the temple as a garden of golden plants with leaves of beaten gold, stems of silver, solid gold corn-cobs and 20 life-size llamas and their herders all in solid gold.^[31]

The temple was destroyed by its Spanish invaders who, as they plundered, were determined to rid the city of its wealth, idolaters and shrines.

Nowadays, only a curved outer wall and partial ruins of the inner temple remain at the site.

With this structure as a foundation, colonists built the Convent of Santo Domingo (St. Dominic) in the Renaissance style. The building, with one baroque tower, exceeds the height of many other buildings in this city.

Inside is a large collection of paintings from the Cusco School.

Cusco has the following important museums:^[32]

There are also some museums located at churches.

The city had a population of about 434,114 people in 2013 and 434,654 people in 2015 according to INEI.

As capital to the Inca Empire, Cusco was an important agricultural region.

It was a natural reserve for thousands of native Peruvian species, including around 3,000 varieties of potato cultivated by the people.^[37] Fusion and neo-Andean restaurants developed in Cusco, in which the cuisine is prepared with modern techniques and incorporates a blend of traditional Andean and international ingredients.^[38]

Cusco is twinned with:^[39]