The vast, legendary catacombs hold secrets much stranger than stacked bones.

One of Australia's largest secondhand bookstores.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

A historic arboretum and non-conformist, non-denominational park cemetery.

Famously misunderstood wonder of the ancient world

The history and future of cannabis.

The celebrated eyesore created by starry-eyed sweethearts.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Climb inside an iron crystal magnified 165 billion times its normal size.

Eighty million natural history specimens call this gargantuan museum home.

A comic book store that puts the marvel back in marvellous.

A recently restored Shoreditch landmark with ties to Jack the Ripper.

Historic church where a number of Shakespeare's actors are buried.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Hear the quietest sound from across the dome.

Metro station with a claim to rock n' roll fame.

Cold war icon and onetime "hole" in the iron curtain.

The most visited, and possibly most controversial, museum in Germany.

Blitzkrieg bop your way through Berlin's Ramones Museum.

Occult books, tarot, oddities.

Dilapidated ruins that once treated a notorious young serial killer, currently hosting vandals, squatters, and ghost hunters.

The word 'wunderkammer' translates as 'wonder-chamber'. This Wunderkammer is both a museum and a retail store.