According to legend, this tomb holds the secrets to time travel.

These ornate arches show how the course of the River Thames has changed.

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

A relic of Victorian grandeur hides beneath a busy South London road.

This secluded walkway overlooks a magnificently wild London green space.

A little slice of Japan and its aesthetics in London's Holland Park.

This 1920s Dutch barge is now a floating bookstore.

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

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

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

A unique waterfall that some believe attracts the fairfolk.

Remnants of a Victorian garden feature sitting in public woodland.

The fountain marks the area where hundreds of accused witches were burned at the stake.

The world's largest collection of witchcraft regalia.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

This giant wooden treehouse within a sprawling garden has its own eatery.

A kaleidoscopic warehouse-maze of handmade neon signs.

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

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

This curious, round temple is the oldest still-standing marble building in Rome.

Jesus' footprints and the first catacombs in the world.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

An alchemist's "magic door" stands in the middle of a Roman park.