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

Hear the quietest sound from across the dome.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

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

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

Charleston's historic city jail once held everyone from pirates to Civil War POWs.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

The final resting place of the Seminole Indian chief who fought against government occupation in Florida.

A quirky Poe-themed joint on an island keen to celebrate its overlooked connection to the famous writer.

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

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

North America's oldest authentic African Village.

One of the oldest living oak trees in the Southeast.

The only working large-scale tea plantation in the United States.

Paths are maintained, but trees have taken over plots.

This glass-stain Mary attracted thousands of pilgrims until her head was shattered by a vandal with a slingshot.

The collection of 80+ pieces created between the years 1100 and 1500 is intended to be seen, heard, smelled, touched, and tasted.

Twenty-eight years after this local landmark was washed ashore by hurricane Hugo, it was washed away by hurricane Irma.

Town of spiritualists and mediums in Florida.

Where commuters walk through remnants of an ancient Greek necropolis.

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

The hallucinogenic center of the ancient world.