Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

It takes a nine-mile hike to reach these hot springs, but weary hikers are rewarded with stunning views and a warm soak.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

Yo, Adrian!

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

The oldest surviving botanic garden in the United States.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

World's first "penitentiary," meant to be humane, drove men insane.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

A brick-paved former section of the historic coast-to-coast highway.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

A fiery crater has been burning in the Karakum Desert since 1971.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

The Voodoo Superstore of the world.

A miniature baseball stadium honoring Johnny Rosenblatt Stadium, home of the College World Series from 1950-2010.

This abandoned Victorian-style house was built in 1884.

Perhaps the most beautiful of preserved saints, with a little help from Paris.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.