The crumbling remains of a 19th century fortess.

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

According to one local tradition, the entrance to the Voodoo underworld can be found in New Orleans through seven gates scattered throughout the city's French Quarter.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

This unique shop is full of memento mori art, antique medical equipment, secret society paraphernalia, and historical relics.

This strange example of the Egyptian Revival architecture trend now holds Mardi Gras floats.

A typical "Old South" manor, once owned by author Anne Rice, served as the setting for several of her witchcraft sagas.

A house of courtship where the Jazz Age's most storied lovers got their start.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

One of the last remaining venues on the Old Chitlin’ Circuit is a kaleidoscopic music hall at the end of a dirt road.

A mysterious find dredged from Louisiana waters.

A 19th-century Gothic, castle-like statehouse by the Mississippi River.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.

This art center is way beyond your average pumpkin-carving operation.

Ohio's 19th-century communist micro-society.

Abandoned since the 1950s, the streetcar lane beneath the heavily trafficked bridge lays empty and unused.

The overgrown remains of one of the premier auto-racing speedways in the Midwest—and also one of the most deadly.

The overgrown remains of an old rail bridge rise above the valley like ancient Greek ruins.

The headquarters of a pioneering cast iron and cast aluminum cookware company is in ruins, but still standing.

A theater sits abandoned on Roosevelt Road, once majestic in splendor, now majestic in decay.

This overgrown Illinois water park offers a whole new type of adventure.

This hotel was used during the Manhattan Project to house official visitors.

The secret city built by the Manhattan Project.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.