Once a black market electronics marketplace, now an otaku shopper's paradise.

The original "capsule building" is a masterpiece of Metabolist architecture.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Qatar's oldest market can trace its origins back more than a century.

No building in the world leans as far as the so-called “Leaning Tower of Abu Dhabi.”

The world's largest frame offers spectacular views of the city's past and present.

Feed it cash, get your very own gold bar.

Whitewashed mosque contains the world's largest carpet.

This indoor ski resort has a mountain contained inside a mall.

The only quarter of the Old City not dedicated to a major world religion.

This bazaar is one of the oldest in the Arabian world.

This spectacular mosque houses the second-largest chandelier in the world.

An imposing Omani fortress surrounded by date palm trees.

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

A whopping 14,000 copper coins cover this miniature fighter jet.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

An overlooked memorial honoring the local Washington residents who died in World War I.

Look closely and you’ll notice that the color changes a third of the way up the tower.