other nearby inca sites are: pachacuti's presumed winter home machu picchu, which can be reached by a lightly maintained inca trail; the "fortress" at ollantaytambo; and the "fortress" of sacsayhuaman which is approximately two kilometers from cusco. other less visited ruins include inca wasi, the highest of all inca sites at 3,980 m (13,134 feet), and old vilcabamba the capital of the inca after the spanish took over cusco.