This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

This 13-foot smiling peanut in Georgia helped Jimmy Carter win the 1976 presidential election.

A toxic ghost town sitting atop a massive coal fire.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

These lush botanical gardens employ the most purrfect pest control force.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

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

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

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

In which a local geological marvel becomes a quaint roadside attraction.

A museum with a window view of the Himalayas and an on-site climbing wall.

This shop specializes in oddities and Victorian-inspired wonders.

A monument celebrating the idea of reaching inaccessible places.

Strange beasts lurking in a garden are all that remain of a quirky, short-lived theme park.

This huge work of functional public art replaced a landfill in New Jersey's Meadowlands.

An unusual assortment of steerable wooden sleds is on display in a library in New Jersey where they were first invented.

Once on display alongside a giant Gumby, it’s as tall as a nine-story building when fully extended.