This bone-filled cave got its name after they found 140 bear skeletons inside.

Romania's only crater lake with water as pure as if distilled.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

This snug medieval lane is one of the narrowest streets in the world.

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.

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

A muddy alien landscape that is home to rare species of exotic plants.

No one knows who built this strange cave of worship or exactly why.

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

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

A countryside Romanian cemetery filled with colorful crosses bearing lyrical, ironic, or satirical rhymes.

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

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

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

Moss and stone turn this waterfall into an otherworldly liquid veil.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

This apartment is a true time capsule of local life in Bulgaria during the Soviet regime.

Not far from a popular beach, an unfinished, abandoned mansion for Bulgaria's last communist dictator.

One of the largest mines in Bulgaria is now home to a vast museum more than 100 feet underground.

These natural cliffs look like they are a part of an old castle complex.

The social hall of this former factory is a Communist-era time capsule.

A mysterious tunnel hidden in the shadows of a colorful, historic sanctuary.

An ancient Thracian city where fire rituals were practiced on the largest cult altar in Southeast Europe.