Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

This playground sculpture of an icon from the past is dedicated to the children of the future.

Sweet Willy, at 30 feet tall, is the world's biggest beagle.

A wild west land agreement was etched right onto this historic Idaho stone.

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

One man's ambition created this psychedelic log home.

An alley covered with 20 years of bubble gum.

Quite simply the largest tree in the world (by volume).

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

An office built to look like a giant basket.

A collection of the best toys ever made, The National Toy Hall of Fame is filled with kids, fun, and for some reason, a bird preserve.

The home, museum, and death site of Kodak's influential founder.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

A field in which God and his son Jesus purportedly appeared to a young farm boy named Joseph Smith.

World's largest herd of white deer populate a former U.S. Army depot.