Photo: Chalisimo5, CC BY-SA 4.0 via Wikimedia Commons
The largest collection of Machu Picchu artifacts in the world. These artifacts were collected by Yale University researcher Hiram Bingham beginning in 1912 and returned to Peru in 2011. The museum is housed in a late 18th-century house called Casa Concha.
Casa Concha is a colonial-era house located in Cusco, Peru. Its name is attributed to one of its former owners, possibly Martín de la Concha y Jara, governor and intendant of Cusco around 1812, his descendant Martín Concha y Cámara, or even José Santiago Concha y Salvatierra, Marquess of Casa Concha.
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Monasterio de Santa Catalina de Nuestra Señora de Los Remedios
Also a collection of religious art. Admission with the boleto turistico.
Catedral Basílica de la Virgen de la Asunción
Elaborate large cathedral full of colonial-era religious paintings. The biggest church in Cuzco, in front of Plaza de Armas. As a tourist the entrance is S/25. If you go in a "misa" (mass) between 06:30–09:00, it is free. No photography allowed.
Twelve-angle stone
A large stone in one wall has 12 sides and 12 angles. This one has become almost a symbol of Cusco and is a striking example of the precision of Inca architecture and stonework.
Displays a collection of popular art featuring handcrafts of the modern era.
Extensive museum of pre-Inca, Inca, and colonial artifacts. Labels in English and Spanish, though the descriptions in English are sometimes pretty different from the ones in Spanish.
The park square has churches, shops, restaurants and bars surrounding it, and is a great place to spend an afternoon. The historical center of Cuzco is beautiful, but you will have to deal with all the street vendors and hawkers of cheap paintings and other souvenirs. They are everywhere in and around the Plaza de Armas. They somewhat spoil the experience.