Beautiful mosaics cover the first stations opened on New York City's newest subway line.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

A modern zoetrope on the New York City subway.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

Sniff the Titan Arum's rotting flesh.

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

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

During the holidays, a vintage subway train whisks New Yorkers back in time.

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

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

The "Seinfeld" diner.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

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

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

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.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Ride the subways of yesteryear.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.