The term LIKE THE BUILDINGS AT MACHU PICCHU can be solved with the word INCAN, which is an adjective used to describe the people and culture of the Inca Empire. The Inca Empire was a South American civilization that flourished in the 15th and 16th centuries and was centered around the Andes Mountains in modern-day Peru. The most famous site associated with the Inca Empire is Machu Picchu, an ancient city built on a mountain ridge. The buildings at Machu Picchu are renowned for their unique architecture, which is characterized by the use of large stones fitted together without mortar.