According to a gruesome legend, an architect sacrificed his wife to build this spectacular, 16th-century cathedral.

This 11th-century structure is one of the oldest churches in Romania.

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

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

A stunning 18th century pharmacy and medieval chemist's collection.

Home of the first female Hungarian poet, where her secret writing lay hidden for over a century.

An abandoned monument remembering the "Pančevo Holocaust" now stands as a shadow of its former self.

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

Ruins of an old water tower that look like a horror-film castle.

What started as a collection of vintage tractors turned into a museum filled with cars, radios, and other oddities.

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

Visit an imposing 13th-century Transylvanian citadel lurking not far from the region's more heavily touristed attractions.

Despite being pillaged and destroyed a number over times down the centuries, this historic church still sort of stands.

A statue of Paulina Hermann, the eccentric noblewoman known as the "mother of cats."

This dazzling Art Nouveau mansion is now home to the Modern Art Gallery Subotica.

Take a hike to this unique rock formation formed by lava flows.

300 years of pharmaceutical history on display.

World's tallest cigar-shaped radio tower.

Trimmed trees grow alongside the graves like topiary tombstones.

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.

The remains of an entire Roman city can be explored in this interactive museum.

One man's little-known private clock museum hides inside a historic farmhouse, set amidst the Austrian countryside.

The abandoned military base looks like a post-apocalyptic wasteland.

One of the biggest Buddhist stupas in Europe, hidden from most locals.