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

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

The oldest active mini golf course in the U.S. has an elegant Art Deco style filled with lush tropical plants.

Free public park and gardens filled with peacocks and peahens.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A modernist landscape of water and sci-fi concrete.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

Half of a waterfall goes into the river while the other half seems to disappear.

The highway's southernmost spot is a beloved local attraction.

This woodland architectural installation acts as a camera obscura for the heavens.

The world's largest indoor go-kart racetrack is hiding in Connecticut.

This natural wonderland is a unique chance to explore a Carolina bay, a mysterious geological formation of unknown origin.

One of the oldest living oak trees in the Southeast.

It's safe—and permitted—to walk across these twin natural sandstone arches.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

The historic home still shows the scars from a little run-in with the British in 1813.

An artist sees trees as a medium for sculpture.

A gardener's enduring labor of love is spread throughout a small Vermont town.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

One car at a time please.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

An attractive alpine lake at 8,400 feet that is accessible via a paved road.