Faces carved into the cliffs create an otherworldly walking trail.

An elegant sandstone stairway built by the WPA still connects two neighborhoods in Akron.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Beautiful scenery, history, science, and physics come together in this remnant of shipping lore.

Nicknamed the "Grand Canyon of the North," this open-pit mine in Minnesota has a much shorter history.

A miniature world of concrete and stone in Springfield, Ohio.

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

The centerpiece of the Delta Blues Museum is a wooden sharecropper’s cabin that once housed a titan of blues music.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

A real flying saucer, contracted by the U.S. Air Force.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Less a museum than a bizarre fantasy world created by artists and engineers.

The blinking light atop the iconic landmark has been sending secret messages for decades.

A bizarre house filled with an astounding array of collections.

This award-winning men's bathroom was just too beautiful to not allow women to see.

This replica of the Greek structure is in the heart of Nashville.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

Featuring one of the most complete and original collections of Presidential memorabilia, this is the site of the last front porch presidential campaigns.

Train fans from all over flock to this railroad viewing park where three lines converge.