Real bones which are said to have belonged to a Polish dragon.

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

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

World's largest crossword puzzle spans the side of a towerblock, its clues scattered throughout the city.

The first museum in the world devoted to sexual gadgetry.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Where commuters walk through remnants of an ancient Greek necropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

Decades before the scandal, this staircase on the river was a literal "water gate."

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

A historic Montreal market that was the city's agricultural hub for over century.

Baroque celebration of the end of the Great Plague of Vienna.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

This private residence was the template for one of the most beloved television homes of all time.

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

A huge musical instrument played by the ocean.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.