Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

A snapshot of the city's fascinating voodoo culture.

Get up close to an F-4 Phantom flown in the Vietnam War at this Florida park.

The site of an ancient Mississippian settlement that appears to have flourished during the 10th to 13th centuries.

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

This remote camping site offers incredible stargazing opportunities.

One of the last Art Deco gas station still standing in Dallas.

Faces carved into the cliffs create an otherworldly walking trail.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

This mile marker stands at the unofficial end of a highway built to defend the United States from a Japanese invasion during World War II.

The sculpture's largest spire points directly toward the North Star.

A monument to the frontier doctor who came up with the idea of delineating highways with a painted line.

A giant desert bird that once swung music fans at Coachella now has a home in a nearby traffic circle.

The Tallahassee Airport serves over half a million passengers a year and is home to some permanent residents too.

Is this 47.7-mile stretch of highway the longest straight road in the United States?

A concrete arrow from a 1920s network of airmail beacons is still preserved at the western edge of suburban Reno.

The iconic D.C. restaurant where the Cuban Missile Crisis was negotiated, now a Walgreens.

It was once the base for a series of domestic terror attacks.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

A spectacular tribute to statesman and philanthropist Andrew Mellon.

A striking memorial to the 21 lives lost in an explosion at the Washington Arsenal