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

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

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

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

A beautiful geyser under environmental threat.

A tunnel with windows, so you don't miss out on the impressive views.

The unusual patterns in this rock formation result from two distinct modes of weathering.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

This historic national park is covered in the stunning ruins of red rock pueblos.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This open-air reconstruction of an Old West town, a cross between a theme park and a museum, provides an immersive historical experience.

See 150 million-year-old dinosaur tracks and bones dating back to the Jurassic period.

A short but powerful waterfall resides amid Colorado’s Great Sand Dunes.

A hotel with a rich Wild West history of miners and bootleggers.

The highest waterfall between the Rockies and the Appalachian Mountains.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

The land is home to swimming ponies and a legendary 18th-century treasure.