A fairytale island floats in the middle of Italy's little-known Lake Orta.

The location of the last witch trials of Italy, known as "The Salem of Europe."

Pilgrimage site for star-crossed lovers.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

The largest and most famous wax anatomical collection anywhere in the world.

The glowing blue Nymphaeum of Emperor Tiberius.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

Renaissance villa and gardens complete with a tormented colossus.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

A submerged archeological park still holds the wonders of a Roman Sodom.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

A historic observatory now an astronomy museum beautifully situated at the moat of the Middle Age city centre.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

A dream-like maze full of strange art, surreal spaces, and fantasy landscapes to get lost in.

This museum inside Amsterdam's largest cemetery explores how people deal with death.

A former plague hospital turned medical museum.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

Peek through a transparent pyramid and drink in the mountain made of books.

The history and future of cannabis.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Cat art as far as the eye can see.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.