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

Breathtaking and huge 430 year old maps of Italy.

The remnants of this Douglas fir predate Columbus's arrival in North America.

A statue honors the genius who allegedly first took a meatball and made it into a hamburger.

This burger joint is named after everyone's favorite carnival prize and is adorned with a giant one over the door.

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

Small and slightly hidden, the American Writers Museum is preserving the legacy of America's finest authors.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

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

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

Legend says Dungeons and Dragons players can get their dice blessed at the creator of the game's memorial.

Whimsical sculptures dot a woodland path surrounding their creator's old summer cottage.

A unique outdoor timepiece at a "clothing-optional" resort.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

The world's longest known cave system.

Prehistoric animals decorate this popular outdoor park.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

Largest outdoor staircase in the United States.

The center of the only hemisphere that awards visitors with a commemorative coin.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

"Iron Age" creatures fill this huckster's rusted metal sculpture garden.

A colorful square marks the heart of the city's LGBTQ community.

An eerie site of reverence for those who have completed an epic journey.