What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

This unusually circular centenarian barn became a Route 66 icon.

The modest childhood home where the baseball legend and Yankees star learned to hit from both sides of the plate.

An oil baron's wild paradise and the winner of an ill-fated air race.

This historic theater's pipe organ still accompanies silent films just like it did in 1929.

When you can afford only half a road, you build only half a road.

This former mining town was named the most toxic town in America.

Nature's biggest mammal swims in landlocked Oklahoma.

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.

A giant "X" symbolizes the blood spilled from the brutal Juárez drug wars.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The oldest continuously operating fish market in the United States.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Because there's no place like home.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

Resting place of Hollywood's immortals is also site of summer film screenings.

One of few surviving standpipe water towers in the U.S.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.