A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

Hiding amid the largest camellia collection in the country lies a charming children's maze, donated by a secret admirer.

Quite simply the largest tree in the world (by volume).

Four hundred granite steps were built into this massive rock by the National Park Service.

A ghost town originally established and governed solely by Black Americans seeking a place of their own, free from discrimination.

An antique store houses the last operational diner from the defunct department store chain.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

One street divides a single town that stands in two U.S. states.

Step back in time on this preserved 1800s farm.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

The unbelievably opulent home built for an infamous newspaperman.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

An abandoned 1920s-era stretch of cabins now overshadowed by the 66 Motel.

Don't blink or you'll miss it.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

One man's ambition created this psychedelic log home.

The longest living non-clonal organisms on Earth.

A whimsical, punny collection of "fence art" outside the tiny mountain town of Baker, Nevada.

Ancient pueblos built into the base of a natural canyon wall.

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

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

The world's largest military aircraft cemetery.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.