St. Francesca Romana, patron saint of drivers, resides in the church she founded.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

A small cell adjacent to this church was once the bedroom for a renowned saint.

A burial vault located under Tiber Island in the middle of the Italian capital.

Remnants of a 4th-century church with vivid medieval frescoes and ancient sarcophagi hide beneath this old basilica.

The mystic whose incorrupt corpse still attracts the faithful.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

Plaques on its facade commemorate the Tiber's most destructive deluges.

This statue is the only female representation of Rome's "talking statues."

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.

The history and future of cannabis.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

The Gaslamp District's oldest bar sports a urinal marked with a golden plaque that was allegedly used by Mick Jagger.

This saucy statue once caused outrage among locals.

A crumbling ghost town on the South Dakota prairie.

A giant scrap metal troll rests his hands on top of a dilapidated building covered in graffiti.

An abandoned early 20th-century gold mine in a spectacular setting overlooking Bridgeport Valley and the Sierra Nevada.

A collection of windows created by two of the foremost leaders in the British Arts and Crafts Movement.

Positioned outside a church, this sinister folkloric figure incited protests in both 1902 and 2002.

At almost 900 feet long, this is Bulgaria's longest suspension bridge and the only way to reach the small village of Lisitsite.

This 17th-century passageway is home to numerous bookshops, a witch legend, and the oldest pizzeria in the world.

Even though bison are not native to this Danish island, you might find them walking around the Almindingen Forestas as part of a nature experiment.