The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The first declared National Monument in the United States.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

This striking art museum holds an amazing series of curiosity cabinets.

This cave holds a surprisingly colorful variety of geological oddities.

A place to eat for on-the-run agents and espionage enthusiasts.

A house and yard adorned with bizarre concrete sculptures in a Milwaukee suburb.

A museum celebrating the self-taught artist-environment builder.

Complex aquaponics systems allow fish and plants to grow in harmony.

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

This perfectly preserved Chinese medicine shop was untouched for decades before being reopened as a museum.

Hollowed out cedar log tubs set in an ancient towering forest.

Oregon's unexpected high desert, displaying layers of time in a colorful show.