One of the oldest churches in Romania is believed to have been built on the site of a pagan temple.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

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

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

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

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

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.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

A small town Romanian cemetery filled with darkly humorous gravestones.

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

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

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

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

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.

Believed to be the smallest castle in Europe.

A museum dedicated to linguistics, from how babies learn to talk to endangered and extinct languages.

Backwards hour and minute hands and a timing mechanism that fluctuates with the temperature led to this clock tower's local nickname.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

The tallest church in Mechelen might have been the tallest in the world if not for a lack of funds.

Nestled in the woods lies this land art project: a hybrid between park, maze and natural monument.

A statue paying homage to a world-record-setting aviator who disappeared under mysterious circumstances.

A medieval quay that was the Mayflower's final port of call before sailing for America.