Title: Machu Picchu
Subjects: Incas, Antiquities, Civil engineering, Peru, Hydraulic engineering, Machu Picchu Site, American history: pre-Columbian period, BCE to c 1500, South American archaeology, Structural engineering, c 1000 CE to c 1500, Civil Engineering (General), Hydraulic Engineering (General), Technology, Technology & Industrial Arts, Architecture, Engineering - Civil, Engineering - Hydraulic, Sewage disposal, Water treatment plants
Places: Machu Picchu Site (Peru)