The highest point in Louisiana, Driskill Mountain at 535 feet above sea level.

The only international border marker within the United States.

Foragers once flocked to this big beautiful bayou to hunt for pearls.

A wealth of pop culture statuary and green chile dishes give this roadside restaurant clout.

Crumbling remnants of what was once a booming town full of silver.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

This Old West prison built into the side of a cliff was said to be inescapable.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Inside this garden, visitors are offered a glimpse into how inhabitants of the region survived centuries ago.

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

This huge dam across the Colorado River caused an armed standoff between two U.S. states.

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

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

A scrap-metal sculpture recalls an infamous 19th-century camel.

This memorial pyramid marker honors one of the United States Government's first official camel riders.

The celebrated eyesore created by starry-eyed sweethearts.

It's where the final scene of the beloved Tom Hanks movie was filmed.

Dad jokes and wordplay abound in this comic fake cemetery.

This little slice of old Jerusalem in Oklahoma is the evolution of a century-old passion play.

A peculiar forest that was handcrafted for government experiments.

American bison herd descending directly from a Bronx Zoo breeding program that saved the species from extinction.

Over 50 historic windmills whir away at this outdoor museum.

An acoustic anomaly with a mysterious cause sits in the heart of Tulsa.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.