City Mills Dam is a dam on the Chattahoochee River between Downtown Columbus Georgia and Phenix City Alabama. The dam was built in 1907 to power the City Mills grist mill. Previously a wooden dam dating to 1828 had existed at the site. The dam impounds a 1.3-mile (2.1 km) run of the river reservoir of approximately 110 acres (0.45 km2). Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Natural Place