A series of playful yellow penguins share a serious message about the environment.

An existential riddle in the world's largest ancient castle.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

Countless grotesque faces stare out from this eerie Prague art wall.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Walk through Czech history in Prague's largest graveyard.

A Jenga-style cylindrical tower of books that appears to go on forever.

The national park was once a plantation estate.

This grand gothic brewery has been pumping out suds for over a hundred years.

A quirky assortment of musical marvels from around the world.

This small-town pizzeria won the Hollywood lottery.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

Scene of the grisly murder of two Norwegian women in 1873.

New England's tallest light house stands on an island with a history of cannibalism and death.

The highest point in Maine is a grand gift to the state citizens that also happens to be one end of the Appalachian Trail.

The eccentric mansion of one the most popular horror authors of modern times.

An abandoned church gets a second life as a massive beer hall and event space.

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

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

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

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

Final resting place of the author who wrote the ghost story "The Turn of the Screw," and his brother, the Harvard doctor and paranormal investigator.

Over fifty whirling pools left by the glacial age.

A historic bridge no one is allowed to cross.