This fortress is a place of great sacred and military importance to the Incas.
There is an elegant and intricate walled complex containing seven rose-coloured granite monoliths which puzzle scientists, who say that the stone was not mined in the valley.
A steep stairway enters the group of buildings, among which the best known is the Temple of the Sun - an unfinished construction in front of a wall of enormous boulders. Portions of the original carvings on these huge worn stones can still be seen, although it is unclear if they really are pumas, as some claim.
Specialists say that the unfinished condition of the temple has less to do with the Spanish destruction of Ollantaytambo than with the fact that it was simply never completed.