Places martenjacobs Wants to Go

This "flat geyser" bubbles up out of the ground periodically like a disappearing river.

The largest prehistoric cemetery on the Balearic Islands dates back over 2,500 years.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

There are hundreds of secret WWII bases hidden in British forests. Built to fight a Nazi invasion, they remained unknown for decades.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

The bomb-ravaged remains of of a colossal Neptune.

Five candy-colored villages on the Italian Riviera.

Ham is serious business at the Prosciutto Museum-Serious, delicious business.

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

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

This Tuscan lake hides a 13th century town that is still visible when the water recedes.

A factory director designed what was the world's longest suspension footbridge in 1923 so his employees could get to work safely.

What better way to honor a pioneering anatomist than by preserving his severed head like a specimen?

This former fascist summer camp was abandoned for decades.

The now-abandoned Fascist summer colony served a dark purpose during World War II.

An abandoned village, frozen in time by the threat of a landslide.

A beautiful chapel on the hills of the Oltrepò Pavese claims to house the tomb of King Edward II of England.

These four fountains are said to have healing properties, with a glass of the 'miracle' water being given to Louis XII of France.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

These gutted monastery ruins still stand proudly in the middle of the Italian countryside.

A dreamlike medieval church dug into the tuff rock, with unusual carvings and possible traces of the Templar knights.

Does this strange mural depict witches battling beneath a penis tree?

This abandoned Brutalist treehouse is a hidden architectural relic.

An unusual house built using an iso-elastic membrane.