The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

A student driver's nightmare.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

This 1920s Dutch barge is now a floating bookstore.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Hidden beneath the streets of London is a secret subway that only carried mail.

A tongue-in-cheek arcade where the games are based on everyday life.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

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

This 220-year-old house is a reminder of New York City's Dutch past.

A Yiddish theater turned movie house turned rock and roll landmark turned gay disco turned bank.

New York City's only preserved family home from the 19th century.

A hands-on traveling collection of the innovative devices of yesteryear.

An annual extravaganza of Broadway theater memorabilia.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

There's a piece of New York City transportation history hidden in plain sight at a Manhattan subway stop.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

The "Seinfeld" diner.

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

A former connection to City Island, it has been abandoned since the 1930s.

A pig barn converted into one of the most eclectic residences in Nantucket.

This hidden labyrinth offers walkers some brief peace of mind.