Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

These ruins are all that's left of the former Alabama State Capitol.

A rusted metal giant pays tribute to Birmingham’s industrial past.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

This rare basilica nestled right in downtown Asheville is an architectural marvel, inside and out.

An unfinished rail tunnel that has since been used to house cheese and bats.

A 56-foot tall statue of the god of fire looks out over Birmingham, Alabama.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

Giant novelty guitars now mark the spot where Robert Johnson is said to have sold his soul to the devil.

A six-foot pair of socks hangs from a drawer of the world's largest bureau.

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

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

The simple gravesite of a Romany clan leader is dotted with offerings, including cans of her favorite drink, Crush orange soda.

This church houses the “incorrupt” body of its founding Bishop.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

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

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

A bronze of the man in all his sinewy glory celebrates his longtime connection to the Ohio city.

A gothic church spire sits atop this skyscraper, the tallest church in the world.