This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

Eighty million natural history specimens call this gargantuan museum home.

A little sculpture with a large wardrobe.

This historical Netherlands fortress still bears the marks of its single siege.

Incredible labyrinth of man made caves.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

Visitors may notice something strange walking through this quaint German town.

A poem by Arthur Rimbaud is inscribed on the wall of a street that, while it is only one block long, plays a key role in multiple novels.

An unusual number plate signifies the building's saucy past.

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

This demon atop the Notre-Dame de Paris looks utterly bored.

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

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This clifftop arch is a natural stunner.

Unscathed for almost 2,000 years, the best preserved Roman triumphal arch is in a small southern Italian city.

During World War II, the Shroud of Turin was secreted to this remote southern Italian complex.

This medieval Italian town is a sheer (and beautiful) cliffside defense.

A massive bridge forms part of an aqueduct that was deemed an architectural wonder of its time.

Nobles would stage mock naval battles on this large lake at the Royal Palace of Caserta.

This medieval Italian village was transformed into an architectural marvel by the famous "Papessa" Donna Olimpia.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A fascinating insight into daily life in the Eastern Bloc.