This unreal Portuguese palace looks as though it's made from a pile of different castles.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

One of the smallest bookstores on the planet.

A unique zoological park home to over 30 species of wild cats, both big and small.

César Baldaccini's iconic sculpture of a 40-foot thumb stands tall in La Défense.

The mummified heart of Louis XVII, the lost dauphin of the French Revolution.

A short distance from the Eiffel Tower is the final resting place of several of the city’s more well-known and interesting characters.

The headless bodies of more than 1,300 guillotined victims of the Reign of Terror are buried here in mass graves.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

The floorboard scrawling of a tragic madman is on public display outside a Paris hospital, much to the dismay of its opponents.

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

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

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

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

The history of radiation is on safe display at the foot of a radiation science laboratory.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

This small, ingenious cannon once helped regulate Parisian life.

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

France's national museum of scientific and industrial instruments.

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

One of the oldest medical collections in Europe focusing on rare surgical instruments.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.