All of Chicago's wood-paved streets are long gone but two alleys remain.

This historic hotel invented the chocolate brownie.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

A home that witnessed Civil War combat on the Sunken Road has the battle scars to prove it.

The Kirkland Monument remembers a selfless Civil War hero who braved the battlefield to give water to his dying enemies.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

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

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

This quaint archive of the silent era preserves and pays homage to a seminal moment in film history.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The largest permanent Monopoly board makes one of the longest games even bigger.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

Once one of the largest producers of pig iron in the world.

This whimsical seashell-shaped place of worship was designed to blend into its surroundings.

This downtown Dallas art installation is always on the lookout.

An artist's vision for connectivity spans seven continents and 16 countries.

A fake town founded by Western movie stars is now becoming a hip desert community.

A music-filled, booze-soaked oasis in the desert.

On a barren hillside in the Yucca Valley, the recently restored Desert Christ Park has attracted pilgrims and kitsch hunters for over 50 years.

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

The obelisk meant to mark the founding father's grave at Monticello is actually on the University of Missouri campus.

The iconic remains of the original Academic Hall that burned down in 1892.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.