The abandoned remnants of a little sanctuary for world peace that fell into disrepair.

The World's Largest Bull.

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

A brick-paved former section of the historic coast-to-coast highway.

The deserted railroad town had a last gasp as a ghost town attraction before being abandoned for good.

This Minnesota town celebrated the state's 100-year anniversary by creating a massive ode to nature's smartest bird.

This massive roadside mascot was the first version of the giant to illustrate his butt.

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

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

Eight feet in diameter and more than 24 feet around.

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

The lowest point in South Dakota and the source of the Minnesota River.

One of the world's most definitive collections of musical instruments, spanning all cultures and historical periods.

Known as "The Hill of the Little Devils."

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

This monument remembers one of the manliest men of the frontier who fought a grizzly before dragging himself 200 miles to safety.

This odd stone memorial remembers a loyal dog who offended the rail barons with his speed and saved his master with his pee.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

A massive mausoleum towers over the gravestones in a 19th-century Italian "model village."

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

The mark of the Devil's horns on a marble column in Milan.