The Old Mill shown in the opening credits of “Gone With the Wind” is actually fairly new, and was never a mill at all.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

The unusual burial monument of Arizona's first governor.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

This golf ball–shaped former desert real estate office now houses a UFO museum.

All of the 20 occupied houses in this mostly abandoned town feature some curious display of junk art.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

Collection of vintage trailers double as hotel rooms.

What is the Thing?

Limestone caves with spectacular showcase chambers.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

An urban laboratory.

America's only nuclear missile silo open to the public.

A reproduction of earth's many biomes.

Joe Minter is only doing the work of God in his yard, he says.

This 1,500-acre development hopes to be the Central Park of the South.

A 56-foot tall statue of the god of fire looks out over Birmingham, Alabama.

Once one of the largest producers of pig iron in the world.

Alabama has a fiberglass Stonehenge. With apologies to Spinal Tap, this one is full-size.

A miniature city built by a single hunchbacked monk.

One person’s lost luggage is another person’s treasure.