This historic patch of real estate offers a glimpse of colonial Boston.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

Nearly 300,000 acres of wildlife, natural splendor, and a hidden ghost town have been designated a national monument.

Ute tour guides have been sharing the ancient dwellings and rock art inside this large park with visitors for more than 40 years.

The largest source of fossilized insects anywhere.

Despite many attempts to finish this overpass, it has been abandoned since the 1970s.

The largest man-made crater in the U.S. marks the spot where we once tested mining with nukes.

A picture-perfect town, perfect for blowing up.

This massive crater in the middle of nowhere was used to train astronauts for moon landings.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

Potential high level nuclear waste storage site for the next 10,000 years and beyond.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

An Ancestral Puebloan ruin that appears to burst into flames in the sunlight.

The location where the iconic movie character declared it was time to go home.

A hotel with a rich Wild West history of miners and bootleggers.

Drift through underground caves on a tube.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

There's nothing creepier than a cemetery next to a clown motel.

In the middle of a remote desert town is a surprisingly opulent hotel.

These tall, red sandstone pinnacles outside Moab are often forgotten amid their more famous neighbors.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.

A winding, cliffside stretch of road overlooking the Delaware River.