Over several decades, one of London’s most iconic city gates was dismantled, moved out of the city, and then moved back.

These Stolpersteine located in Spain honor Republican soldiers who perished at the hands of Nazis after the fall of France.

This unique building in the main square stands out among the city's typically Baroque architecture.

This church is named for one of the most dramatic tales in the early Christian church.

Dynastic Home of the De Piro Family.

A sweet symbol marks the place where torturous executions were once carried out.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

360° views of the city plus five floors of optical illusions and hands-on science.

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

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

This beautifully verdant lagoon is tucked below a massive volcano in a crater atop a black pebble beach.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

Believed to be the former location of one of the earliest Viking assemblies in Europe.

A 150-year-old steam locomotive crosses the southern half of the island daily.

The smallest pub in Britain was once a cabinet of curiosities and it still has the dead cat to prove it.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

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

The fountain marks the area where hundreds of accused witches were burned at the stake.

At 1,732 feet above sea level, this spectacularly isolated yet surprisingly bustling bar is the highest pub in Britain.

This charming English house was once the home of England's most famous poet.

Stonehenge has nothing on Castlerigg’s views.

The Greek island's old British cemetery feels like a forgotten garden.

One of the largest, oldest, darkest, quietest motel rooms in the world.