Enjoy a tour of oddities and makeshift monsters at this souvenir store with an offbeat sense of humor.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

This lesser-known geographic marker was the reference point for all surveys of the continent for 75 years.

A small-town limestone memorial to a local cartoonist and to Porky Pig, his most famous subject.

This roadside prairie Statue of Liberty replica is one of the foremost examples of the Boy Scouts of America's "Strengthen the Arm of Liberty" campaign.

This early pioneer landmark is one of the oldest buildings in this part of Kansas and one of the few Dutch mills ever built in the state.

Massive still life just off the highway in Kansas.

See the home and the range on which "Home on the Range" was arranged.

This Colorado gallery is primarily for cars, but its collection also includes quilts, pottery, and more.

An environmental art installation inspired by farmhouses and crop circles.

Once a slice of Cold War-era military history, this museum is finding its future in the stars.

Winter and summer solstice aligned sculpture in the middle of nowhere.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

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

Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

The narrow mountain road that carves a path between Florence and Victor is tied to ghost towns and ghost stories.

Meet Rita the Rock Planter, one of Danish sculptor Thomas Dambo's enormous wooden trolls.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

The largest source of fossilized insects anywhere.

On the edge of grassland in northeastern Colorado, these rock formations are some of the few remnants of a high plain that has eroded away over millions of years.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Just a man taking his prehistoric pet for a stroll.