More than a century of radio history is told in these displays.

One philanthropist's extensive collection of knick-knacks and curiosities is now a public museum of oddity.

Over fifty whirling pools left by the glacial age.

More than 200 unconventional musical instruments that anyone can play.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

Jule Körner's house full of bizarre architectural details.

These mysterious petroglyphs in Vermont reflect a troubled history in the treatment of Native American culture.

Try a classic Necco candy bar being resurrected in a small suburban shop.

A steampunk wonderland that preserves America's history of industrial innovation.

A monument to the first person to sail around the world solo, nowhere close to where he was born, set sail, or landed.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

A popular 19th-century natural landmark is now hidden within a sprawling forest.

A 30-acre garden inspired by the principles of modern physics.

Climb inside an iron crystal magnified 165 billion times its normal size.

This massive underground salt mine now holds a sci-fi theme park in its depths.

Possibly the world’s easiest Easter-egg hunt.

The last of Amsterdam's original sea level markers remaining in place.

This large copper bolt represents the benchmark for measuring sea levels in most of Europe.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The world's only museum devoted to the wonders of fluorescence.

Less a museum than a bizarre fantasy world created by artists and engineers.

Pyramid shaped monument with a tall tale attached.