A faded reminder of what was once a common sight in London during the Blitz.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

A building that survived WWII, possibly on the virtue of its name alone.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

A recently restored Shoreditch landmark with ties to Jack the Ripper.

The Tudor-style cottage in the middle of the square is not quite what it seems.

A unique tribute to the millions of animals who served and died for the British military.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

Catacombs turned marketplace.

Eighty million natural history specimens call this gargantuan museum home.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Where condemned pirates met their grisly end at the gallows on the River Thames.

The only castle in North America to ever house European sovereigns.

Frida Kahlo's childhood home, now a museum of her life and works.

This modernist cinema has survived war and reconstruction to become a symbol of Lebanon’s revolutionary spirit.

The largest hewn stone in history.

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

An open-air sewer system that was covered piece-by-piece over 300 years.

A man throwing a giant severed hand towers over Antwerp’s main square.

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

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

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

Budapest's Communist-era statues, banished to the suburbs.