2. Vilarinho Da Furna , Portugal
Halfway across the world another dam project submerged the ancient Portuguese village of Vilarinho da Furna in 1972. Dating back to Roman times, the village comprised of 80 houses inhabited by 300 residents prior to submersion. Eerily, the underwater ghost buildings reappear every so often when water levels drop. The houses still belong to the descendants of the original villagers, who took all their belongings, including roof tiles and rocks, to build their new homes. A small museum, built from the original rocks, commemorates the village as it once was.