You can still ride this 100-year-old work of art in Brooklyn's largest public park.

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 bit of retro transportation flair preserved in the world's largest department store.

This abandoned subway station can still be seen on regular commuter trips.

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

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

A very classy 1920s-era bar right in Grand Central Station.

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

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

Elevated freight railway turned wildly successful urban park.

Millions of numbers carved in glass represent the tattoos forced upon victims.

The world's largest piece of copyrighted artwork.

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

The former site of an all-but-forgotten colonial landmark is now remembered by an often overlooked bas relief.

Each August, one of the largest religious (and food) celebrations in the country is held in Boston.

A plaque memorializes the Boston location of one of the largest nightclub fires in history.

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

The remnants of a Gilded Age elegance preserved in the middle of a stark modern tower.

Historic Hull Street was actually the first street with a proper name in the Boston area.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

A men’s restroom became a sandwich shop.

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

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

This ambitious father and son team reigned supreme over the North End, and witches, for many years.