Entire apothecaries are on display at this Lisbon museum, which explores the history of medicine.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

An art-filled botanical garden and former dyeworks hiding in plain sight.

An ancient ossuary in Rouen.

Located in the house where Gustave Flaubert was born, this odd museum has more to do with medical grotesquery than the Western novel.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

One of the oldest and largest wooden churches in France was very evidently constructed by shipbuilders.

The Grand Lodge of Ireland is one of the oldest in the world, full of fantastical, elaborately themed rooms.

These gigantic skeletons tower over visitors and provide insight into the creatures that once ruled over Ireland.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This fascinating museum in an old water tower holds the world's largest collection of Vodou artifacts from western and central Africa.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

Take a leisurely walk through the park to find the seven giant troll sculptures hidden throughout the park.

Nature is slowly overtaking this disused cemetery on the outskirts of Brussels.

One of the deepest indoor swimming pools in the world.

Lavish royal estate punctuated with heated greenhouses.

Climb inside an iron crystal magnified 165 billion times its normal size.

Cozy basement bar sports an inventory of over 2,000 beers.

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

A little sculpture with a large wardrobe.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

The Devil’s own choice when he needs a drink in Brussels.

Brussels' favorite peeing boy has a sister.