A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

A spiritual vortex among the red rocks in Sedona.

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

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

This quiet chapel was central to a community of settlers who reclaimed an abandoned fort.

The world's largest military aircraft cemetery.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

Collection of vintage trailers double as hotel rooms.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

A mistaken marker makes an erroneous claim along the historic Old Divide Road.

This enormous fish commemorates the unplanned release of brown trout into a Michigan river.

Housed in the university planetarium, the thousand-strong collection of tiny towelettes includes a used one from the hosts of Car Talk.

This resort community was known as the "Black Eden of Michigan."

This log cabin gallery is one man's gnarly, hand-carved tribute to his favorite trees.

Largest magic museum in the United States with more than half a million pieces of memorabilia.

An unlikely beach paradise of giant sand dunes lies between two lakes just a few minutes from Michigan's cherry country.

Largest tulip festival in America, includes fireworks, a parade, and a carnival.

An angular maze of concrete in Grand Rapids acts both as public art and as a staircase for fish traveling upstream.

Where most of the world's flypaper was made.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.