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
PeruRail which boasts a series of five switchbacks called locally 'El Zig-Zag', which enable the train to climb up the steep incline out of Cusco, before it can begin its descent to the Sacred Valley of the Incas and then continue down to Machu Picchu. However, this section of the route is currently suspended, and all trains to Machu Picchu leave from Poroy, just outside Cusco, instead. From Poroy, the narrow-gauge line goes northwest to Ollantaytambo, where the branch from Urubamba joins, then on to Machu Picchu station in Aguas Calientes. Tracks formerly continued into the jungle, but they were destroyed