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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Eighty million natural history specimens call this gargantuan museum home.

Scattered throughout London are ancient remnants of the city's former bounding wall.

One part local history, 99 parts gruesome haunted house.

This small-town pizzeria won the Hollywood lottery.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

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

Commemorating the spot where the famous scientist fed his pigeons.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

The former hotel where Tesla invented the radio.

Avoid gangster interaction while window-shopping.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

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

This little museum is built on a theater that was once a wildly elaborate speakeasy.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

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

"Try not to knock anything over!"

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

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

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

A few stone foundations and an old graveyard are all that is left of this once thriving settlement in the wilds of Connecticut.