A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

The enigmatic sculpture hides above an escalator in a Milan metro station.

A map of Italy made entirely of trees.

A stunning bridge that appears as if it's lunging to the shore, and has a legend of a devilish architect.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.

An abandoned train station in Munich constructed for the 1972 Olympic games.

An ancient artistic garden parlor full of hidden water wonders.

A 2,000-year-old engineering wonder hides beneath an Italian town.

The bones of some 7,000 soldiers killed in the historic Battle of Solferino are stored here.

High in the clouds of San Marino sits an ancient tower with some curious prisoner graffiti.

"The prettiest love letters in the world" ... or so said Lord Byron.

An abandoned bell tower in the middle of nowhere is the last testimony of a forgotten medieval village.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

Blitzkrieg bop your way through Berlin's Ramones Museum.

One Italian taxi driver covered his entire house in small seashells creating a weird bit of architecture that is preserved to this day.

Church holding the preserved body of a levitating saint.

Nestled in the heart of Milan is a real wunderkammer of morbid curiosities.

The train platform where Jews were sent to concentration camps is now preserved as a Holocaust memorial.

The highest waterfall in Italy is only "turned on" five times a year.

The bomb-ravaged remains of of a colossal Neptune.

This curious building hides eclectic details like medieval gargoyles alongside naked angels and Art Nouveau mosaics.

An exclusive waiting room built for the royal family in the 1920s is hidden in Milan’s central station.