Acequias in the U.S. Southwest
In New Mexico and other Southwestern states acequias are channels that are dug to divert water from snow runoff and rivers to irrigate fields.
Highest Permanent Settlement in the World
Located at 5,000 meters (3 miles) above sea level, La Rinconada in southeastern Peru is the highest permanent settlement in the world.
The Oldest Continuously Occupied Human Settlement
Erbil Citadel, located in the center of Erbil, Iraq, is the oldest continuously occupied human settlement.
These US Towns Each Have Less Than 15 Residents
Here are a few smaller than small towns in the United States.