This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

The god of wine stares out at passersby on this busy Pittsburgh thoroughfare.

The last funhouse of its kind, where guests enter through the mouth of an 80-year-old blue whale.

Originally a cemetery, this city park remains speckled with a handful of scattered gravestones.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

The hometown of movie legend, military officer and All-American guy next door, honors this great actor.

A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

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."