An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

A spring purported to have healing properties lies just outside Scotland's capital.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

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

This series of Scottish caves has no clear purpose other than baffling historians.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

This punny mirror of another Wisconsin attraction is exactly what it sounds like.

The hidden ruins of an old hydroelectric plant reclaimed by nature.

The ruins of a 2,000-year-old Roman fishing village perched on one of the best beaches in Spain.

Red, white, and blue painted steps along with a Union Jack celebrate the outcome of Gibraltar's 1967 referendum.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

The trials and tribulations of marking Poe's grave.

This small museum tucked within a subway station holds pieces from Madrid's past.

A subterranean relic of the Spanish Civil War hides below this picturesque park.

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

This generously endowed statue once stood guard outside a Roman home.

Read a book with a glass of wine at this classically restored bar.