Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

The artist David Nash planted a circle of trees in 1977.

Wallabies live naturally on this Irish island.

Living trees form the structure of an open-air palace.

Japanese island famous for poison gas and fluffy bunnies.

The only fixed chain and post trail in Scotland snakes its way along the base of a towering seaside cliff.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

A stairway to heaven, or to nowhere at all.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

The world's largest collection of preserved trolleybuses.

This collection of French root art looks like an indoor fairy wonderland.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

The smallest pub in Britain was once a cabinet of curiosities and it still has the dead cat to prove it.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

This 15th century pub is one of only two pubs in England situated on consecrated ground.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

One thousand trees were planted in Norway to be used to print books a century from now.

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

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

A preserved block of timber buildings from the city's industrial era in the Middle Ages.

Cold storage for agricultural biodiversity.

The oldest inn in England served brew to the crusaders.

The ancient tomb acts as a calendar that keeps perfect time.