A small etching on the white marble parapet was written in runic script by a Viking mercenary.

The ornate miniature mansions were built for Istanbul's feathered residents.

Where else would a linchpin of post-colonial Native American cuisine anchor the menu but a museum?

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A woodland close to England's "most haunted village" has been the site of many unexplained events and deaths.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

An abandoned village that resides along the mountains of the Aosta Valley.

The walls of this tiny Italian church are entirely covered with frescoes.

If you ever wanted to touch a medieval mercenary’s three testicles, look no further.

This uncanny fresco celebrating the "triumph of death" was split into four pieces to be moved to another museum.

Since the 1960s, this small village has invited painters to decorate its walls.

This artistic temple brings together multiple architecture styles, but is only an example of one.

A mountain cave is the site of archaeological findings and Paleolithic rock art.

This monumental fountain has moved around the city multiple times.

This medieval oratory decorated in magnificent frescos was constructed after Charlemagne received a vision.

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

This Roman underground canal was the longest tunnel ever built until the late 19th-century.

The relics of dozens of martyrs are stored in a single chapel.

The world's oldest surviving anatomical theater, where "the dead are pleased to help the living."

Armenian monks at an island monastery in the Venetian Lagoon make a rare rose petal jam.

The leathery remains of a woman who died in the 13th century now lie in a church named for her.

One of ancient Etruria's most spectacular archaeological sites with impressive necropolises and rugged landscape.

A striped 12th-century basilica sits in the countryside of Sardinia.

It took more than 300 years to build this church, which is home to two sacred vessels believed to hold the blood of Christ.