An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

Built to house a chapter of the Knights Templar, this grandiose building is a relic of Freemasonry in Chicago a century ago.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

Internationally known record store and purveyor of "dusties."

This historic hotel invented the chocolate brownie.

An antiquated German apothecary on Chicago's North Side.

A lush green oasis in the middle of Chicago.

This shop for all your super spy needs hides an educational secret.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A collection of fading fantasy tchotchkes lines this dirt road in the Colorado wilderness.

One of the largest helium balloons in the U.S. is a 112-foot ginormous orange.

The site of murders and Satanic cult gatherings.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

The largest self-built castle in the U.S., six decades in the making.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Colorado's only true geyser is hidden within the San Juan National Forest.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

Once a year, at exactly 11:11 a.m., this monument comes to life.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

An homage to everyone's favorite prehistoric cartoon family.