Dublin's "Dead Zoo" serves as a window to Victorian museum design.

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

Two rocks in a perpetual kiss and one of "the most romantic spot in America."

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

Eighty million natural history specimens call this gargantuan museum home.

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

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

The restored and active Victorian-era final resting place of San Francisco.

The world's only silo that was topped by two revolving restaurants has unfortunately been demolished.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

The last bastion of Roman presence north of the Alps looms over a German town.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

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

This incredible stone temple is a monument to death, victory, and fantasy architecture.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

London's smallest police station is barely the size of a phone booth.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The celebrated eyesore created by starry-eyed sweethearts.

360° views of the city plus five floors of optical illusions and hands-on science.