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

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A sprawling collection of over 106,000 toys from around the world.

This high desert botanical garden is a unique display of New Mexico’s ecology and culture.

The remains of a historic ranch house that witnessed the Civil War battle dubbed the “Gettysburg of the West.”

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

The ruins of this abandoned fort now stand as a picturesque reminder of America's march West.

This unassuming layer of clay boasts an out-of-this-world origin story.

This small piece of railroad history sits behind the parking lot of a chain grocery store.

A roadside attraction filled with an astounding array of gloriously wacky vehicles.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

The final resting spot of the Colorado Transportation Department's beloved unofficial mascot.

This drive-by, rotating mini-gallery is nestled in the suburbs of Colorado.

A hidden piece of Altoona's railroad history in a long-forgotten abandoned town.

A tribute to Loveland’s most famous sweethearts, who helped spread cupid’s message to millions.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

Miraculous tree that seems to sprout out of solid rock.

One of the smallest towns in the United States.

The same security that protects our nukes accidentally protected a gentle herd of antelope.

Hot Doug's "Hot Dog" Stand.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.