Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

This working class sculpture pounds his hammer all the livelong day.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

A sliver of nostalgia in Seattle's Viretta Park.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

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

A walk through the historic city center, under the streets of Seattle.

A giant Troll lurks under one of Seattle's oldest bridges.

A trio of colossal statues spread across a Dallas neighborhood chart the emergence of a giant robot born of a locomotive and spilled gin.

Famously misunderstood wonder of the ancient world

Now home to a drinking establishment, this building has a macabre history.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

A fully functional, 200-year-old remnant of the time when Brixton was mostly fields.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

An artistic tribute to the famous singer, just around the corner from where he was born.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

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.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

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