Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

This South London cemetery holds the remains of more than 15,000 people.

The sign at the garden gate reads: "These Plants Can Kill."

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

These fantastically named natural pools look like something out of a Scottish myth.

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

Vast fan-shaped British cemetery honouring American servicemen lost in World War II.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

London's old-school healing garden.

Repository for more than 22 million pickled specimens.

A cluttered and astounding collection of antiquities and curiosities.

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

Frequent fliers welcome in this airplane hotel.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

Disused penal colony features prisoner artwork, some sketched in human blood.

A Red Cross memorial museum at the site of the Niš concentration camp that operated for four eventful years during World War II.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.

An ancient rock engraving shows Aboriginals used their advanced knowledge of the stars to hunt and gather.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.