Built in 1512, the oldest cathedral in the Americas.

The oldest colonial fortress in the Americas was once the home and later prison of Christopher Columbus.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

This Nebraska town wants to double its population with plywood cut-outs of townsfolk.

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

This unusually circular centenarian barn became a Route 66 icon.

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.

Along the historic Mother Road is an old gas station with a secret counterfeiting past.

Nature's biggest mammal swims in landlocked Oklahoma.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.

This simple badlands butte is the highest point in North Dakota and may be the only high point to charge admission.

This sculpture gallery is home to magnificent beasts made of scrap metal and found objects.

An entire city block built completely out of petrified wood.

One man's quest to save his town with a trail of record-breaking sculptures.

An ode to South Dakota's state fish.

The final resting place of the Hunkpapa Lakota leader Tatanka Iyotaka, commonly known by the English translation Sitting Bull.

Lured here by the promise of tens of thousands in gold, Jesse James started a quintessentially American trend of robbing trains in-motion.

The notorious couple camped at this site after a bloody shootout with police.

A small burial plot formerly stranded in the middle of a road.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

The largest source of fossilized insects anywhere.

An eclectic assortment of medieval architecture in a small Iowa town.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

Strange red rock formations that have been attributed to a higher power for hundreds of years.