In the Shawnee National Forest, amazing rock formations peer through the treeline.

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

A six-story-tall golden pyramid, surrounded by a moat.

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

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A winged-helmed, sword-brandishing tribute to German Americans.

Terraced flowerbeds and rock sculptures in the midst of the Minnesota wilderness.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

This massive roadside mascot was the first version of the giant to illustrate his butt.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

A unique botanical garden housed in three giant geodesic domes.

Statue dedicated to the star of an old television show.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

Gambling, boozing, and yodeling animals cover the walls of this dive bar cum natural history museum.

143 feet of leaping muskie whose mouth can be used as a wedding venue.

17,400 lbs., 12 feet in diameter, and 29 years in the making.

The menacing creature had a tremendous influence on the local culture before being exposed as a hoax.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.