Inca Civilization: Amazing Roads and Machu Picchu Although the environment of the Andes which was the area they inhabited was often quite harsh the Inca utilized the natural landscape to construct mountaintop settlements. Their most famous site today is the ruins of Machu Picchu but their capital city of the Inca civilization was Cusco where the laws were decreed and spread throughout their empire along their sophisticated messaging system. #inca #machupicchu #history #worldhistory