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

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

Dedicated to the art of hunting, with juxtapositions of contemporary art.

A unrivaled and rather horrifying collection of wax dermatological models.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

A subterranean shelter remains intact under a busy Paris railway station.

France's national museum of scientific and industrial instruments.

Paris' linguistic guide to the international language of, yes, love.

A museum of carnival attractions where you are invited to ride the rides.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

This bronze statue of Martin Luther King was placed in the park without permission.

This small electronics museum is full of whirring, humming, clicking ephemera.

Unknown to many, this is where items not displayed in a Dutch history of science museum are held.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

A journey through 430 years of bulbiculture in the Netherlands.

The world's largest private telescope collection hides in a secret wing of a Dutch auto museum.

A radio telescope for listening to the stars, based in one of the cloudiest countries in the world.

This functional solar system model was inspired by the famous Eisinga Planetarium.

The world's longest wildlife overpass provides Hilversum's critters with a safe alternative to trying their luck on the roadway.

One of the largest burial mounds in the Netherlands and Belgium.

This subterranean studio is filled with fascinating kinetic art.

A dramatic art installation features a BMW flying out of a building in Rotterdam.

This massive mural by famed pop-artist Keith Haring was hidden for almost 30 years until its 2018 rediscovery.