Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

An enormous, inside-out glass globe built in 1935.

Wood carving meets bird conservation at this museum showcasing the life's work of one man.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

Pop culture has helped to keep this iconic British building from being destroyed.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Hear the quietest sound from across the dome.

Eighty million natural history specimens call this gargantuan museum home.

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

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

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Inside this community-run museum, visitors are treated to the history of toys and games.

Dispersed across 45-acres, 39 structures house a massive collection celebrating American Folk Art.

Lake Champlain Bridge, the recently demolished and rebuilt bridge where they filmed "What Lies Beneath".

This rare polygonal meeting house is rumored to be built in a circle so that the devil has nowhere to hide.

A giant toy jack made of numerous welded-together fire hydrants.

Driftwood dinosaurs lurk within trees covered in a rainbow array of avian abodes.