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

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

The bronze uniforms commemorate the vital role of women during World War II.

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

This museum inside a museum tells the story of London's timepieces.

Charles Babbage's proto-computer, painstakingly brought to life.

A clock designed to run with perfect accuracy for 10,000 years.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

A serene plaza that commemorates one of the Granite State's most iconic figures.

The mosaic Star of David at the front of this store hints that it's no ordinary Italian grocer.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

This beautiful Brooklyn monument over a crypt memorializes a grim and largely unknown story from the American Revolution.

Seriously good slices of Sicilian pizza lurk at the back of the Bronx's oldest enclosed market.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

The world's largest public collection of PEZ memorabilia.

More than 3,200 cookie jars line the walls and shelves of this little shop and over 1,000 salt and pepper shakers

The 7,000-year-old calcium carbonate formation creates a magnificent natural bridge.

These temples are among the oldest free-standing stone buildings in the world.

A single light illuminates one man's overshadowed contributions to street lamp history.

The attic and basement house two museums stuffed with oddities like swallowed spoon handles and a shrunken head.