This once rural mansion now sits in the heart of the city.

Once a slice of Cold War-era military history, this museum is finding its future in the stars.

This subterranean treasure trove is said to contain a motorcycle, a Chevy, and a teal leisure suit.

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

There’s a hidden military meme engraved on the World War II Memorial.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

Corn-inthian columns with a uniquely American take on neoclassical architecture.

The walls of the iconic dome are hollow and have a secret stairway.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

Home to items never before seen by the public.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

This popular park is home to a sea serpent sculpture that now overshadows the twisted history of its creation.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

Elvis's own personal tropical hideaway.

This replica of the Greek structure is in the heart of Nashville.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

A museum and shop on Bourbon Street located in the French Quarter.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The only rotating bar in New Orleans has been slowly spinning since 1949.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

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