An abandoned underground bunker not far from downtown New Orleans.

This Art Deco airport was once deemed “the air hub of the Americas.”

An abandoned warehouse turned art sanctuary in New Orleans.

The world-record holder for the longest bridge stretching continuously over water.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

An otherworldly musical haven in The Big Easy.

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

This ancient village provides insight into the complexity of the pre-Columbian Fremont Culture.

This former mining railroad is one of the best-preserved short lines in North America.

A common entry point to the Griffith Observatory trail holds its own wonders.

"Unity, Creativity, Beauty."

This historic black and white monastery is one of Bulgaria's architectural jewels.

Five candy-colored villages on the Italian Riviera.

Eighty million natural history specimens call this gargantuan museum home.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A vintage video game wonderland in downtown Reykjavik.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

This stunning concert hall has become a symbol of Iceland's national recovery.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

The largest whale museum in Europe allows visitors to walk among life-size giants.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

An encyclopedic collection of mammal penises.

Iceland's largest lagoon is home to stunning multi-colored icebergs.