There are so many places lost beneath the waves around the world, you could create an alternate atlas of watery wreckages. But during the 20th century, the number of towns underwater increased exponentially as hydroelectricity projects submerged some to create power for many.
These drowned towns were intentionally flooded behind new dams, their buildings removed or dismantled, and their residents displaced. In recent years, droughts have allowed some of these towns to re-emerge. Others remain underwater. Here are 10 haunting waterworlds.