This hidden gem in Arizona is truly worth the rugged journey.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

An improbable waterfall springs from an orange-white cliff face, tumbling into the headwaters of the Virgin River above Zion National Park.

This old selenite mine is dotted with tiny crystals that make it shimmer like it's covered in glitter.

This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

The Adriatic's most famous wind can be reliably experienced in the city's Marina.

One of the tallest lighthouses in the world also serves as a monument to the fallen of World War I.

In between two buildings in Ljubljana, medieval tunnel to nowhere.

A relic from the Industrial Revolution got a second life as a contemporary performing arts space.

Strange rumors surround the artist who created these solemn metal guard dogs.

The Slovenian architect designed many landmarks in the capital city, including his own dream house.

This one-time health resort was used by aristocrats around the world.

A scene from one of Hungary's most famous novels.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

A diminutive statue that was inspired by the sculptor's own daughter.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

A public work of art that also provides some relief from the summer heat.

This former railway facility is the oldest in Slovenia, and now houses a museum showcasing the history of steam locomotives.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

Hungarian Jews were ghettoized during the Second World War, but little remains of the original wall that closed the Jewish people off from the rest of the city.