An abandoned 146-acre summer resort slowly being reclaimed by nature.

This abandoned hospital has a long history, having housed both German and Soviet soldiers in the course of its life.

This decrepit abandoned building is made all the more eerie by its dark history.

Final resting place of a New Haven urban legend.

Amazing views of Long Island Sound can be seen from this mountaintop tower.

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

An ancient glacial pothole waterfall in the heart of the Green Mountains.

A beautiful multicolored mound formed by the mineral deposits of the Orenda Spring.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

An unoccupied lighthouse encased in layers of ice from the waters of Lake Erie.

This former tuberculosis treatment facility now stands at the center of a public park.

Take a drunken tour inside the world's largest known geode.

Small, privately owned island divided between Michigan and Ohio with abandoned vacation homes and a derelict lighthouse.

Dating back to the 1800s, two imposing buildings in Michigan have had countless transformations over the years.

Over thousands of years, this slot canyon was carved out of the bed of an ancient lake.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The writing studio of an American adventure author, built in the style of a medieval castle.

The oldest badlands in North America, Makoshika State Park takes it name from the Lakota words for broken land.

This sprawling building built in 1890 was one of Minnesota’s earliest and largest mental health facilities.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

Its dark depths conceal millions of rare, delicate crystal formations.

The beauty and the beast of hydraulic mining is on full display at this California Historic State Park.

A lone tower rises above the cliffs in a city park, offering fantastic views of the Connecticut landscape.

Take a dip in the world's largest mineral hot springs pool.