Annual celebration commemorating the 1965 sighting of strange lights in the town.

Hidden beyond a kitschy giant beetle is this remarkably sprawling collection of preserved insects.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

Paleoamericans built these ancient walls high in the Colorado Rockies as part of an extensive hunting system.

The site of the gruesome massacre—and maybe cannibalism—of five men, a tragedy that made Alferd Packer infamous.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

These pretty kitties killed and ate as many as 135 railway workers.

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A huge musical instrument played by the ocean.

A massive volcanic plug is now a protected area that hosts a number of bird species.

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

The fifth-longest natural arch in the world, and the longest outside China.

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

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

These boots are made for selfies.

The unique location where the former president was rapidly sworn in.

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

Continuing the tradition of the dime museum in style.

An oddities shop packed with twisted treasures inspired by Oscar Wilde and Edgar Allan Poe.

In Houston's airport, a cow is properly equipped to jump over the moon.

A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

The highest bridge in America was built for an almost unnervingly small amount of money.

One man's love for East Coast diner culture brought an entire eatery all the way from New Jersey to Colorado.