A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

The middle finger of modernity.

Go inside to really appreciate this 500-year-old technological masterpiece.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

The city is full of whimsical portals to another world.

Its floors are marked by colorful cues depicting Michigan's native fauna.

Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

What was once the largest NFL stadium.

An abandoned Victorian-era amusement park is rusting away amidst luxury houses.

The birthplace of the Ford Model T is now a museum full of antique cars.

38-story baroque tower reflecting Detroit's rise, fall, and possible rise again.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

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

Eons ago, a rushing lava river formed this pristine passage through solid rock.

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

Dramatic river bend surrounds a natural red-rocked pedestal.

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

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

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.

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

This quiet park's strange sedimentary spires were named after Kodak's color film.