This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

This centuries-old pub boasts a collection of more than 4,500 snippets of neckties from around the world.

The stoic structure boasts a whimsical set of stained glass art commemorating Lewis Carroll.

The shop where the girl who inspired the beloved character once bought sweets is now a book-themed commercial curiosity.

Over 100 years ago this pyramidal holding cell was reserved for rowdy drunks but now only offers five minute sentences.

The Rozenberg wind wall in South Holland makes for smooth sailing through the Calandbrug canal.

This enormous storm barrier is one of the largest moving structures on Earth, with each arm taller than the Washington Monument.

Yup, that's a 330-foot yacht passing over the highway.

An intricately carved Viking church overlooks a glistening fjord.

The sign at the garden gate reads: "These Plants Can Kill."

Staves, storm-calling, and of course, necropants.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

England's "pier at the end of the universe" unites astronomy and contemporary architecture.

Ruins of a late 1950s Polish ski jump ramp in the middle of the city.

This extensive collection covers thousands of years of Polish military history.

Special benches that play Chopin's music are scattered throughout his native city.

A tree planted by Marie Curie is treasured by the Radium institute that she set up.

Order “Proletariat’s Cutlet” at this communist-themed restaurant allegedly once visited by Lenin.

A delightful museum entirely dedicated to the tiny homes of dolls.

One of the world's largest collections of medieval religious art.

This biographical museum honors the groundbreaking scientist at her birthplace in Warsaw.

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.