Elevated freight railway turned wildly successful urban park.

A modern day curiosity cabinet.

Two thousand artifacts from around the world collected by one woman who loved to travel.

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

Largest man-made excavation on earth!

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

A room in New York City that contains 250 cubic yards of dirt.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

One man's homage to the orange as realized through a long-term folk art labor of love.

A museum, art project, and institution that demands we look at the world around us in a strange new way.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

You were once able to challenge a chicken to tic-tac-toe at this park, which is now converted into the Aikman Wildlife Adventure.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

One man's swirling six-acre monument of stone.

A house carved into a rock in the 1940s.

A fitting attraction for the corn capital of the world.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

An eccentric folk art landmark made out of discarded bottles by an inspired "grandma."

World War II-era Nazi compound nestled in the Santa Monica hills.

America's most famous piece of self-built architecture.

Bridges, terraces, and replicas of historic structures all built of rock and petrified wood by one man.

A Boeing mechanic and his wife leave a whimsical, stone sculptured garden as their legacy.

An eccentric playboy's astounding natural history collection.