Inca ruins - Tarawasi

Everywhere around Cusco there are ruined stone temples, exquisitely built by the Incas 6 centuries ago. The 'crazy paved' stone blocks are fitted together perfectly, the quality varies depending on the importance of the structure. Some of the blocks are huge and some are very complex carved shapes. But nobody seems to know precisely what the buildings are for - many such as this at Tarawasi are just a hill built up with walled terraces full of door sized niches.