A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

One of the world's most definitive collections of musical instruments, spanning all cultures and historical periods.

This monument remembers one of the manliest men of the frontier who fought a grizzly before dragging himself 200 miles to safety.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

A fitting attraction for the corn capital of the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The only ski tunnel in North America provides easy access to amazing snow and beautiful views.

Kay Andrews's recipe was so good, her family immortalized it in stone.

Water flowed out of the town's unusual tree stump fountain in the 1930s, and the well still runs today.

A quirky old tree covered in tokens, cans, and bottles of wishes.

This giant ice cream cone is the last remaining icon of a Salt Lake City staple.

This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

Dubbed the "Blade Runner dragon," this buzzing neon sign is a beloved local icon.

A small oasis not far from downtown Moab.

Visitors to this library are in for a real-world education in modernist architecture.

Oddly shaped rock formation, misassociated with a nearby utopian community.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.