A house filled to the brim with oddities and curiosities.

Couple's personal collection of pinball machines turned public pinball museum.

Make your reservation to have coffee with some kitties.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

A highway marker that honors a former spy plane pilot and local hero.

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

A small, forgotten prison cemetery marked only by a wrought-iron fence and eerie depressions left in the ground.

Outdoor exhibits explore the contributions of European, African, and indigenous peoples to American frontier culture.

A lone historical marker off the highway and scattered debris are all that remain of this Cold War-era missile site.

This museum explores the grim reality of life in the earliest British colonies in America.

America's first public mental health facility.

Eighty million natural history specimens call this gargantuan museum home.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

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

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

The curios of pharmacist and collector Henry Wellcome.

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

A Victorian park cemetery, standing on the site of what was once the Great North Wood.

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

A tribute to an explorer and naturalist often overlooked by history.

A mineral spring that became all the rage in 17th-century England.

At this small museum, visitors can view artifacts from the only battlefield in London during the War of the Roses.