This 1920s Dutch barge is now a floating bookstore.

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

A tongue-in-cheek arcade where the games are based on everyday life.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

These barriers stand as stark reminders of Northern Ireland's troubled past.

Obscure and obsolete publications are given new life as works of art.

An ordinary lamppost situated in the middle of Cambridge has an unusual moniker and history.

Down this yellow brick road, visitors are treated to toadstool houses and massive mushroom sculptures.

This small enclave plays host to a house, church, and wishing well all composed entirely of recycled glass bottles.

Known as the most scenic route in Sri Lanka, this train line is steeped in history and offers an unparalleled view of the country.

This quaint farm in the Peloponnese countryside hides an astonishing cache of antique curiosities.

A historic shipbuilding town is home to a sail-through fish-and-chips shop.

At one of Berlin’s oldest churches, visitors can place mosaic tiles to help restore a medieval mural.

A series of sculptures beneath the waves promote ocean conservation and support coral reefs.

The colorful soil of Iran’s "Rainbow Island" attracts artists and nature lovers.

This interactive sculpture allows visitors to leave a message in case a friend passes by.

This museum explores iconic buildings and the cultural heritage of Malaysia in miniature form.

It took a lifetime to collect these mechanical musical wonders.

Once a beautiful palace, this structure is now known as the ''museum of destruction."