Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Ruins of a German Castle on top of a towering stone pillar.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

Paris' linguistic guide to the international language of, yes, love.

Macabre astrological automaton clock dating to the late 1400s.

The site of the climactic scene from the classic horror film is now a historic landmark.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

The United States Capitol's former columns still stand.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Elevated freight railway turned wildly successful urban park.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The fairy tale castle of the "fairy-tale king."

Medicinal spa created with the discharge from a geothermal energy plant.

These fantastically named natural pools look like something out of a Scottish myth.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

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