Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

An Italian geologic wonder that served as the inspiration for the landscape of Dante's hell.

Italy's curious field of mud volcanoes is named for being both gross AND salty.

Years of archaeology, just chillin' by the water cooler.

These pretty kitties killed and ate as many as 135 railway workers.

A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

This Tennessee manse was built so opulent that the very utilities doomed it to fail.

The secret city built by the Manhattan Project.

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

A spooky and decrepit mental health facility is slowly being replaced with newer digs.

One man is on a singular quest to name an island after a famous hip-hop artist.

This miniature feudal castle was built on a whim to honor a US Navy pioneer.