On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Historic funicular railway, believed to be the shortest railroad in the world.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

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

The celebrated eyesore created by starry-eyed sweethearts.

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

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

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Macabre astrological automaton clock dating to the late 1400s.

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

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The legendary building that needed ghostly approval before being built.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A huge musical instrument played by the ocean.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Scattered throughout London are ancient remnants of the city's former bounding wall.

A little slice of Japan and its aesthetics in London's Holland Park.

Hear the quietest sound from across the dome.