Cusco, a city in the Peruvian Andes, was once capital of the Inca Empire, and is now known for its archaeological remains and Spanish colonial architecture. Plaza de Armas is the central square in the old city, with arcades, carved wooden balconies and Incan wall ruins. The baroque Santo Domingo Convent was built on top of the Incan Temple of the Sun (Qoricancha), and has archaeological remains of Inca stonework. 

Machu Picchu is an Incan citadel set high in the Andes Mountains in Peru, above the Urubamba River valley. Built in the 15th century and later abandoned, it’s renowned for its sophisticated dry-stone walls that fuse huge blocks without the use of mortar, intriguing buildings that play on astronomical alignments and panoramic views. Its exact former use remains a mystery.