The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

A memorial museum to the political prisoners who were held at Sighet Prison, once one of the most feared places in Romania.

This enormous abandoned prison was once dubbed the "Bastille of Romania."

Packed to the ceiling with antique taxidermy and hunting arms.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

A collection of items from a way of life that no longer exists.

The Natural History Museum that time forgot.

Even drowned in an ocean of toxic waste, the remnants of this Romanian village stand tall.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

This massive underground salt mine now holds a sci-fi theme park in its depths.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

This oddly shaped building is a surprising Soviet-era crematorium.