There once was a man named Lear / Who found limericks so dear / His final resting space / Is an unusual place / Most people don’t know he’s here.

Of course Salvador Dalí lived in a castle...

Occupied for six centuries by Franciscan Order nuns, this monastery is an amazing ode to Catalán Gothic architecture.

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

The Gaudí-inspired building that was the start of Terrassenc modernism.

The grotto where Saint Ignatius of Loyola lived as a hermit for nearly a year.

At this exhibit on the world of poison, venomous animals steal the show.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Walk inside a half mile long crevice right outside the town of Garmisch Partenkirchen.

This small Bavarian graveyard is filled with empty graves for German soldiers lost during the World Wars.

Inside the corridors of this flea market, visitors are sure to find some obscure and odd treasures.

The world's most important buildings shrunk to a tiny size.

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

This skeleton-filled altar piece served as a backdrop to one of the most iconic scenes in "The Sound of Music."

This series of underground chambers contains Europe's largest subterranean lake that is slowly drained each day.

Artfully arranged bones of 5,800 Austrians.

This former insane asylum now holds a pathological anatomy museum.

Handsomely crafted representations of our round planet.

Two stunning 17th-century libraries and a cabinet of curiosities.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A 16th-century horror show built in a lovely Italian garden.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.