During the roaring 20s, this structure was built as an architect's mansion—one that would make Gatsby gawk. Since then, the cliffside structure has has a few major makeovers. It became the 18-story Hotel del Salto in the 1950s, but was abandoned shortly afterwards and left to collect moss and tales of ghosts and hauntings. It was most recently converted into the Tequendama Falls Museum.
After being attacked by the Nazis in 1944, this small village was intentionally left in ruins as a reminder of the effects of war. The silent streets, burnt-out cars and crumbling buildings make for a poignant memorial.
Kizhi Island Medvezhyegorsky District, Russia On an island in a lake, in the middle of a Russian republic that was once part of Finland, these Eastern Orthodox churches, made from wood, are astonishing.