The oldest stone house in Paris was built by its most famous alchemist.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

A haunting collection of the vanished and disappearing natural world.

This museum houses an imposing skeleton army comprised of creatures great and small.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

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

The Sun King's military models, saved from the Louvre.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

This monumental mural crafted nearly 40 years ago is still in perfect condition.

A bronze statue of the fictional character nicknamed "Mrs. Hat" from a beloved Belgian comedy.

A little sculpture with a large wardrobe.

Meet the bronze beloved pet to a family of famous peeing statues.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

This non-profit theatre in the heart of Brussels is dedicated to hosting independent films.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

Christ's blood preserved in a Belgian town.

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.