The vast, legendary catacombs hold secrets much stranger than stacked bones.

2300-year-old Roman road connecting the empire.

At the top of the hour, figures of the London department store's two co-founders emerge and bow to each other.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

Giant, friendly pelicans in Central London, the most unlikely of places.

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.

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

One of the last remnants of the city's Chinese nightclub scene is now a dive bar selling killer mai tais.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Obscure Freemasons still live in D.C.’s largest private residence.

The national park was once a plantation estate.

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

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

The site of the climactic scene from the classic horror film is now a historic landmark.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

This 19th-century church is now a popular roller rink.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.