Visitors to this museum will uncover a whimsical collection of marbles from across time.

Every Christmas, one Arizona city makes the most of its dry climate by creating an arid desert tannenbaum.

Experience Larry Spring's self-taught "common sense" laws of physics.

This beautiful, all-in-one museum, private residence, and bed and breakfast houses a rich collection of African art.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

One of the world's tallest waterfalls wasn't revealed to the world at large until 2006.

Stones speckled along Harris Avenue reveal hidden nuggets of the past.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

The famed amusement district marks the beginning of summer with a wild procession of nautical creatures.

A fitting attraction for the corn capital of the world.

An archive of ceramic eggs painted to record clowns' personal makeup designs.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

A computer bug so primitive it was an actual insect.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

This improbable contraption was passed down through five generations of industrious Tennesseans.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

A perfect replica of the beloved show's first set.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

An experimental, automotive replica of Stonehenge.

San Francisco's newly reopened hands-on science museum.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Explore 10 acres of environmental sculptures.