7. House of the Bulgarian Communist Party, Bulgaria
Dimitar Kilkoff
The former headquarters of Bulgaria’s Communist Party are just as eerie on the outside as on the inside. The flying-saucer-like building, while probably a wonder while it was in use from 1981 until 1991, went into disrepair soon after the fall of the Soviet Union. It is now a ghost of its former self, although plans are being made to restore it.
8. Nara Dreamland, Japan
The Nara Dreamland park, inspired by Disneyland, was opened in 1961. By 2006, however, it closed down. Now it is a popular destination for urban explorers, although security guards still occasionally patrol the grounds and impose fines.