The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

With over 10,000 lights, this engineering marvel lights up the city after dark.

A monument commemorating the role of Alaska's native Tlingit guides in the Klondike Gold Rush.

The facade of this relic from the Klondike gold rush is decorated with over 8,800 pieces of driftwood.

Originally a brothel during the Klondike Gold Rush, this bar once used dolls to denote when ladies were working.

A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

The prototype for all Nazi concentration camps.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

Two cannon-like cranes were installed on top of the bank building to fend off bad feng shui.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

A massive collection of petroglyphs dating back some 40,000 years.

The location where the iconic movie character declared it was time to go home.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.