A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

The location of the world's first telescope demonstration.

Watch the local Netherlands birds from inside this giant eco-egg.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

This towering church is home to a world-famous organ and a treasure trove of medieval art.

A record-size collection of wild-haired troll dolls tells the story of the mythical creature's roots in Scandinavian folklore.

Once home to more than 50 displays of freshwater fish.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This lovely university observatory continues to sit abandoned since its potential savior was sent to jail for fraud.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

The world's largest Our Lady of Guadalupe statue overlooks this Ohio sanctuary.

The tragic reality of a village riddled with rumors of haunts, chemical spills, and serial killers.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

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

The site of Neil Armstrong's first flight is marked by a full on replica of the moon landers.

A retrofuturistic art installation in the Pittsburgh Airport.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

There aren't too many operational funiculars around, but Pittsburgh has two!

This icon of the Atomic Age now lays dormant.

These disused steel furnaces are now haunting ruins that may one day be a national park.

This eccentric mansion museum holds a impressive collection of rare and automatic instruments.