This unique Lady Liberty is one of the only examples of the figure sitting down.

This Ukranian fortress is one of the best-preserved medieval castles in Europe.

Get past the gatekeeper's apartment and enter an elaborate hoax of a restaurant with a Masonic feel.

A men’s restroom became a sandwich shop.

An enormous, inside-out glass globe built in 1935.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This semi-secret storybook hedge maze is also the oldest garden in the city.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

When you've got to go, you've got to go.

The deepest metro station in the world.

This street has over a half-dozen names, all at once.

The dining hall that nourishes workers in Chernobyl's Exclusion Zone is also open to visitors.

Monumental sculptures guard many of the graves, transforming this necropolis into an open-air fine art museum.

The medieval prince founded the first library in Ukraine at Saint Sophia's Cathedral where he was interred.

This derelict superstructure was a very important warning system for the Soviet military.

This unassuming museum's slogan translates to “there is a limit of sadness, anxiety has no limits."

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

This attraction was abandoned after the Chernobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.