The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

The mystic whose incorrupt corpse still attracts the faithful.

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

This monumental fountain has moved around the city multiple times.

The underground sanctuary of a mysterious ancient cult.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Temporary Burning Man sculpture made of two 18-wheelers.

Decades' worth of lost and forgotten objects make up the collection of this tantalizingly odd little museum.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

The most unique castle in all of Southern California, entirely constructed from repurposed materials.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

These structures were inspired by both Native American shelters as well as, strangely, an ice cream shop.

The only museum and archive west of the Mississippi that is dedicated to the study of Abraham Lincoln.

Megachurch turned Catholic church comprised of 10,000 glass panes.

A surreal, Gaudi-inspired play space near an Anaheim community center.

Nationwide network of co-ownership underground catastrophe shelters.

The set location for a 1987 cult classic draws international film buffs to the middle of the Mojave Desert.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

More than 25 fully functional scale replicas of famous lighthouses dot the shores of Lake Havasu.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

Where NASA's satellites and rovers phone home.

The cluster of boulders near Fort Irwin is covered in military insignia.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.