Famously misunderstood wonder of the ancient world

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

Ozymandias’ time-keeping temple.

One of the most well-preserved temples of ancient Egypt.

The first museum in the United States dedicated entirely to posters.

Fabrication workshop where the encasement for One World Trade Center's beacon was constructed.

Hidden inside one of the world's most well-visited zoos is a secret plaque promising eternal life.

An arcade packed with a rotating collection of unique independent video games.

This interactive gallery makes you feel like you've stepped into a fantasy world filled with whimsical monsters.

A collaborative art project that transformed a neighborhood in NYC's Queens.

A self-made museum in Queens, New York continues to display the work of a sculptor known for paving his own way.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

In the back of a nondescript sports bar is a museum-worthy mural by legendary cartoonists.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

A famous songsmith's custom piano, dubbed "High Society," is hidden just out of sight in one of New York's finest hotels.

Piano-making empire filled with 200-year-old steam machines still churning out 1,000 instruments a year.

Haven for steampunks.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

Come for the sustainable organic chocolate, stay for the sustainable organic booze.

Visit the site of a subway powered by nothing more than air--and lots of it.

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

The famous author's cottage hideaway.