This 1967 experiment in modular architecture was designed to be a new model for urban living.

Ride the subways of yesteryear.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

Dedicated to preserving the history of free Black communities in Brooklyn and beyond.

Underground vaults of a former brewery beneath Brooklyn's Crown Heights are now used to ripen cheese.

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

19th century cemetery hidden in Brooklyn's Prospect Park.

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.

Come for the pastrami, stay for the million-dollar art.

A tourist attraction founded around a slumping cabin.

A vertically floating hemlock controls the waves and weather at Crater Lake.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.

Outsider art meets paleontology at this roadside reptile repository.

In which a local geological marvel becomes a quaint roadside attraction.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

The eerie ruins of a remote abandoned hamlet said to be founded by the survivors of a shipwreck.

A desert settlement founded and later abandoned by Hawaiian members of the Church of Jesus Christ of Latter-day Saints in Utah's Skull Valley.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

The trials and tribulations of marking Poe's grave.

An eerie, decaying ghost town destined to fade into the forest.

Bizarre Cavern.