A devastated ruin in the south of Belize where British explorers claimed to unearth the Mitchell-Hedges Crystal Skull.

An important Mayan religious and trading center dating back to 200 BC.

A massive underwater sinkhole made famous by Jacques Cousteau.

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

One of the most controversial statues in Romania is an emperor with no clothes.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

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

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

A lake in the middle of the tundra of Quebec is said to be the purest freshwater lake on Earth.

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

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

Earth's greatest purely vertical drop at 4,101 feet.

Something's watching you.

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

A giant portrait of an ancient king looms over the river.

The romantic botanic tunnel feels like a well-kept secret.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This once-derelict building is now one of the most beautiful bookstores in the world.

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

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

A small town Romanian cemetery filled with darkly humorous gravestones.

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.