This former Cyprus flight hub is now a crumbling, abandoned ghost complex.

A magical museum of fairy tale treasures near Cyprus' buffer zone.

Explore 400,000 years of humans' "battle against darkness" in this offbeat but thorough lamp museum.

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

A pyramid in Central Europe of unknown origin.

Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.

The world's most important buildings shrunk to a tiny size.

Austria's very first and only nuclear power station was completed but never used.

The world's largest historic armory was established by independent citizens to defend themselves from the wars of larger forces.

Croatia's "hairy stone" fortress is one of the most well preserved Istrian castles.

This heart-shaped island looks substantially less lovely after a recent bulldozing project.

This Croatian computer club features such gaming relics as the infamous Virtual Boy and an 8-bit Pacman machine.

Sofia's legislative center is continuously reinventing itself.

A vast Communist-era exhibition space in the Bulgarian capital.

A wonderfully kitsch bookstore the size of a supermarket.

A once-magnificent collegiate church is falling into ruin.

Part ski resort, part modern art space, this lodge brings giant metal spiders and bloody doors to the Austrian Alps.

An exquisite Baroque church in Vienna's old town.

This outsider art house has gone from clinical creation to astounding artwork.

Fantastic stories on a miniature railroad.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

The shell of a medieval fortress offers commanding views of the area it once protected.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

When Croatia became independent of Yugoslavia, the splintering governments left behind these concrete tunnels.