Cusco city in 1535. Remains of the palace of the Incas, Qurikancha (the Temple of the Sun) and the Temple of the Virgins of the Sun still stand. Inca buildings and foundations in some cases proved to be stronger than the foundations built in present-day Peru. Among the most noteworthy Spanish colonial buildings of the city is the Cathedral of Santo Domingo, Cusco. The major nearby Inca sites are Pachacuti's presumed winter home, Machu Picchu, which can be reached on foot by the Inca Trail to Machu Picchu or by train; and the "fortress" at Ollantaytambo. Less-visited ruins include: Incahuasi, the
Machu Picchu more farmland to grow crops, and to steepen the slopes that invaders would have to ascend. The terraces reduced soil erosion and protected against landslides. Two high-altitude routes from Machu Picchu cross the mountains back to Cusco, one through the Sun Gate, and the other across the Inca bridge. Both could be blocked easily, should invaders approach along them. The site is roughly divided into an urban sector and an agricultural sector, and into an upper town and a lower town. The temples are in the upper town, the warehouses in the lower. The architecture is adapted to the mountains.