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

Eighty million natural history specimens call this gargantuan museum home.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

Hear the quietest sound from across the dome.

A hands-off space for graffiti artists to hone and display their skills.

Banksy gives themself artistic license with this piece of London street art.

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

This giant iron playfully pays tribute to an early 20th-century architectural trend.

A wonderful display of arts and crafts handmade by local artisans in the Southern Appalachians.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

This quirky curiosity shop takes its cues from the world's bazaars.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Spiral-bound community recipes and antiquarian gems mingle at this small East Village shop.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A pink cottage covered in hearts served as a haven and a resting place for LGBTQ activists.

A hurricane-stricken oak tree has been reborn as a beautiful chainsaw artwork.

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

This colorful New Orleans bookstore features rare and used titles, with a specialty in Cajun fare.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A graffiti Mecca welcoming artists from around the world.