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

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

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

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

Cryptic messages embedded in the New York City sidewalk.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

One man’s hobby is another man’s world of metal wonders.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

A collection of full-size movie monsters opened to the public.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

"Try not to knock anything over!"

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

A men’s restroom became a sandwich shop.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

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

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The site of Paul Revere's historic two lantern warning.

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

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.