Go surfing on this urban wave, "hacked" by local surfers.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Electrical curiosity museum housed in an old transformer station.

Budapest's Communist-era statues, banished to the suburbs.

A Hungarian pharmacy museum with a box full of mummy powder.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Once the home of a hermetic monk, this cave now houses a small church.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Art and a pun, all in one.

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

The Florence Nightingale Museum is home to the famous nurse's most treasured possession: her beloved pet owl.

Scattered throughout London are ancient remnants of the city's former bounding wall.

An avant-garde artist is survived by his seaside garden.

Repository for more than 22 million pickled specimens.

The monster at the center of the Darwin Center Spirit Collection.

Two plaques commemorate the site of Shakespeare's first theatre.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

Pop culture has helped to keep this iconic British building from being destroyed.

This tunnel entrance is built to resemble a grand castle but no one is quite sure why.