This cryptic monument honors a mysterious dead woman, despite her identity being lost centuries ago.

Belgium's national heroine turned spy sacrificed her life to combat German occupation.

Only museum in the world devoted to bookbinding and book arts holds a permanent collection representing five centuries.

A neutrino detector built into the largest man-made underground cavity in the world.

The mystery of the Putim Ossuary involves a tricorn hat.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

A century-old tradition has culminated in a small but singular collection of feline effigies.

Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

The heads of two giant mythological water horses honor Scotland's horselord past.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

A pagan tradition of draping trees with rags eerily lives on.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

A tongue-in-cheek arcade where the games are based on everyday life.

Eighty million natural history specimens call this gargantuan museum home.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

These fantastically named natural pools look like something out of a Scottish myth.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

A kaleidoscopic warehouse-maze of handmade neon signs.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.