A hot dog stand where the heads are just as hot as the dogs.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

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

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

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

A massive Montreal stadium that has seen nothing but trouble since its inception.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

Guns that have been defending San Francisco since 1904.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

A monument to the love people have for their pets.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

From silent movie theater to rock &roll palace and beyond.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The seat of Buffalo government is a gorgeous Art Deco palace.

Ruins of a once-prized railroad station in New York.

The mall's looks were inspired by the cowboy extras who used to meet up—and cause real trouble—at this Hollywood hub.

A few iconic structures are all that remain of America’s first outdoor shopping mall.

This centerpiece of the Hollywood & Highland shopping center is a recreation of a long-lost movie set.

The blinking light atop the iconic landmark has been sending secret messages for decades.