Cusco, the Capital of the Incan Empire. Possible the only place on our planet that proudly boasts being the navel of the world. When the Spanish arrived they started constructing on top of the Incan buildings. For that reason it is very common to see classic Incan architecture (fitted stones) on the bottom of a building with Spanish Adobe on top. Days could be spent in Cusco without ever scratching the surface of what there is to see or understanding all of its history.