Some of the Old West's most notorious outlaws frequented this mining town.

Toss a Frisbee through the ruins of this Colorado gold mining town.

Inside a state forest, the forgotten remains of a Cold War defensive installation.

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

This 19th-century ghost town offers a stunning view of Lake Michigan and a journey through the region's industrial past.

When he found his hometown was no more, Lowell Davis decided to recreate a "new" ghost town from scratch.

This railroad tunnel was once the longest in Massachusetts.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

This dam in the woods, built by Henry Ford with only manpower and oxen, holds no water and serves no purpose.

Breathtaking and huge 430 year old maps of Italy.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

The Slovenian architect designed many landmarks in the capital city, including his own dream house.

This hulking behemoth is actually five interconnected towers built in the 1960s.

Bring your hiking shoes, wool socks, and thermal underwear for a stay in these cozy forest huts.

Sitting atop a rock on Michamvi Pingwe beach, this restaurant becomes its own island at high tide.

This serene, turquoise lake in an extraordinary nature reserve showcases a rare natural phenomenon.

One of the only places where Earth’s mantle lies above water.

This tiny uninhabited islet off the coast of Norfolk Island was formed by blowing sand from nearby dunes.

This dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.

This abandoned bunker looks out over the Atlantic from its clifftop perch.

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.