This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
outdoor The complex comprises archaeological sites the best known of which is the Sacsayhuaman Fortress. The building was probably used for religious purposes but due to its location and style the Spanish and contemporary writers assumed it was military structure. The consensus among historians suggests that the construction of Saqsayhuaman