Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

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

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.

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

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Elevated freight railway turned wildly successful urban park.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

On the Hudson resides one of the largest clocks in the world.

The remains of a 19th century spring, and the site of an infamous unsolved murder.

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

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

A farm in New Jersey grew a most unusual crop for AT&T's testing purposes.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

Historic town settled in the 19th century because of its convenient location along a popular coal transport route.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.