Old Tudor home moved on thick iron rails to a new spot.

At just 25 inches at its narrowest point, it's one of the tightest streets in the world.

Legend says these rocks used to be hunting dogs, a story that may have inspired Sherlock Holmes' most famous case.

The legend says that this English rock formation was once a hunter who was turned to stone by annoyed witches.

This tangled English forest looks like something right out of a fairytale.

This ancient stone bridge dates back to the early Middle Ages.

Elevated freight railway turned wildly successful urban park.

This icon of the Atomic Age now lays dormant.

A bronze plaque at an intersection in Hoboken marks the place where the game of baseball first took shape.

The first public building in Savannah to offer air conditioning was a luxurious cinema that still operates today.

"X" marks the spot of an echo chamber in the middle of a plaza.

An early-19th-century hotel with a past that is steeped in the Civil War.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

Where the four original members of the Ramones hung out and revolutionized punk rock.

A retired subway car stands alone in a field in the middle of Queens.

A young woman's senseless murder led to the controversial psychological theory of the "bystander effect."

This landmark jazz venue is the oldest continuously running African-American club in the United States.

This restored house is like a time capsule of the president's unconventional inauguration.

A larger-than-life statue of America's favorite sundae marks the place it was invented.

There aren't too many operational funiculars around, but Pittsburgh has two!

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

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

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.