The middle finger of modernity.

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

This ancient Irish tower could easily have stood in for Rapunzel's prison.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

360° views of the city plus five floors of optical illusions and hands-on science.

A naturally mummified 2,000-year-old man.

One part local history, 99 parts gruesome haunted house.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

This Scottish burial tomb once held hundreds of ancient eagle bones.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

A church of bones, decorated with 40,000 human skeletons.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This modest marker near Notre Dame identifies the very center of Paris.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.