Places heathersfour Wants to Go

This geothermal hot spring hides beneath a slowly growing mineral dome.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

An off-the-beaten path cave with an underground lake.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

This giant steer-skull edifice refuses to die.

A self-built castle made by a mysterious man.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

A $100,000 tumbleweed decorates an Arizona park and ride that got its priorities a bit tangled.

Every Christmas, one Arizona city makes the most of its dry climate by creating an arid desert tannenbaum.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

Mysterious painted skulls in Moravia.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

A medieval weapon rumored to have been used by the brilliant poet himself.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

The oldest operating pharmacy in the world features 800-year-old recipes.

The middle finger of modernity.

The first botanical garden, a feather in the cap of the Grand Duke of Tuscany.

A strange-looking 18th-century tower sits on a tiny islet just off Livorno.

This Tuscan church contains a gallery of over 700 ex-votos depicting near-death experiences.

This Italian dam is covered in salt-hungry goats who manage to scale its almost vertical face.

A macabre anatomy museum tucked within an old Italian hospital.