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

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.

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.

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

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

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.

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.

Space-age monument to an early 20th-century uprising.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

This World War I fortress is the perfect place to catch a Montenegrin sunset.

A curious cave church carved into the face of a cliff.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

Seventy-five miles of limestone caves host more than a million bottles of wine beneath a sleepy Moldovan town.

Elaborate mansions built by Roma residents in Soroca to show their success after centuries of discrimination.

The largest wine cellar in the world is a 150-mile network of underground caves near the capital of Moldova.

This narrow fjord-like bay is the largest ria in the Mediterranean Sea.

Dive for drinks at Croatia's first and only underwater winery.