This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

Paths are maintained, but trees have taken over plots.

Once the most flame resistant building in the country, the South Carolina Historical Society building was almost burnt down in a fire.

A multi-storied adobe complex has been inhabited for more than a thousand years.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Railroad came. People came. Railroad left. Town died.

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

Enormous lake at the bottom of a unique cave system.

This structure among the trees was the result of divine inspiration.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

The last Americana on Route 66.

Ancient human, animal, and geometric figures drawn in the earth.

A former utopian healing center created by a huckster and built by derelicts.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Oldest building in California still in use.

Mexican food and folk art.

Megachurch turned Catholic church comprised of 10,000 glass panes.

The biggest drug trafficking passage between Mexico and the U.S.

A US military accident created the legends behind this Mexican version of the Bermuda Triangle.

Mexico's astounding mummy museum with "the world's smallest mummy."

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

The largest island on the great salt lake is home to curious creatures and strange stories.

Visitors to this library are in for a real-world education in modernist architecture.