This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

The curios of pharmacist and collector Henry Wellcome.

Traveling collection of amazing automata.

A hands-off space for graffiti artists to hone and display their skills.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

A mysterious artist-run cabinet of curiosities and library.

Hidden beneath the streets of London is a secret subway that only carried mail.

Giant, friendly pelicans in Central London, the most unlikely of places.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

Electrical curiosity museum housed in an old transformer station.

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

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

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

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

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

Gliwice Radio Tower, likely the tallest wooden structure in the world.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

The shattered remains of the world's once tallest structure.

A national collection of Communist-era musical posters.

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

This fairytale inspired, warped building houses restaurants, shops, and a radio station.

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