The only museum dedicated to the history of the "Magic Lantern," a medieval slide projector.

The oldest active mini golf course in the U.S. has an elegant Art Deco style filled with lush tropical plants.

The wood bears a hidden love note carved by a young Johnny Cash.

A 2,500-pound wooden nickel makes this woodworking museum easy to spot from the road.

This hidden sculpture garden full of Wild West art is one of San Antonio's best-kept secrets.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

A total of 14 men held the title of "president" before George Washington—their historical legacies are enshrined in the lobby of a hotel.

The young girl gained fame for her atypical size and was regarded as a curiosity by the Spanish aristocracy.

This sculpture may be the only known depiction of a man who helped finance the American Revolution and inadvertently created the dollar sign.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

This network of roads is one of the most unique Etruscan creations ever discovered.

Rome's ancient Etruscan rival, now a park full of ruins.

This ancient altar emerges from the thick forests to reveal the mysteries of Etruscan sacrificial rituals.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

The mummified relic of St. Catherine sits forever on a golden throne.

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

The city of Parma's cathedral is home to one of the greatest illusionistic frescoes of the Renaissance.

Every spring, locals see the shadowy figures of a ghost army of slain Greek soldiers descend upon this ruined fort.

A spectacular cave and a beguiling lake.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

Cheap art and political theater in Vermont.

A small chapel celebrating the spiritual bond between dogs and humans.

The site of the first "historically true" UFO encounter in the U.S.

It's not a typo, now say it five times fast!