The pretty iron lamp is a reminder of the architecture underneath London's streets.

Manhattan's deadly West Side railroad, which killed hundreds of New Yorkers, is remembered by this simple plaque.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

The façade of this building looks like a bingo board, but it's really a giant clock by a famed graphic designer.

Set sail on a small scale.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

How did a 154-foot-long piece of spacecraft wind up abandoned along the side of a Florida road?

This midcentury LA bar was the birthplace of tiki culture.

These four islands right offshore have waterfalls, colorful lights, fancy buildings, and a secret purpose.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

Now home to a drinking establishment, this building has a macabre history.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

The oldest standing structure in downtown San Diego.

An inconspicuous suburban street corner is the site of San Diego's worst air disaster.

An inconspicuous footbridge beloved by San Diego locals.

One man's quest for the ultimate road trip vehicle.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

North America's largest accredited model railroad museum.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

This small, ingenious cannon once helped regulate Parisian life.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

Notorious artist squat renovated into legal studios.