An abandoned dollhouse factory.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

A living antique aviation museum in the historic town of Red Hook, New York.

A unique work of art that was created without permission.

This once-private estate is now a dreamy, meditative garden that's open to the public.

This mouldering abandoned mental hospital was once a center for progressive healing.

This abandoned cemetery is crumbling into ruin, exposing the artifacts and bodies buried there.

The remains of what was once the world's steepest passenger funicular.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

Home to the abandoned Tioronda Hat Works Factory, this park is a combination of woodlands and marshlands.

This abandoned factory on the Hudson River once churned out a million bricks a week.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

The life-size bronze statue commemorates the ride of 16-year-old American Revolutionary War hero.

An abandoned asylum once on the cutting edge of lobotomies may be reborn as a Christian college.

This isolated community does not want you to visit.

These conical kilns measure an impressive 30 feet in diameter, and were once used to produce charcoal for a local blast furnace.

World's largest barrel containing an inn.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

The last bastion of Roman presence north of the Alps looms over a German town.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

A team of concrete athletes stands in the middle of a traffic circle.

This artsy public restroom is shaped like a giant john.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.