This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

100 year tradition of fist fights, marked by marble footsteps.

The only museum with its curator—and her pets—buried inside.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Go inside to really appreciate this 500-year-old technological masterpiece.

Norway's oldest cathedral still in use.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Ancient cliffs resembling a kilt on Scotland’s second-largest island emit an entrancing sound.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The ancient tomb acts as a calendar that keeps perfect time.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

Huge standing stones mark a site of megalithic mystery.

A standing relief of a Norman knight whose posture marks him as a Crusader.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

The highest point in Washington state is a volcano covered in glaciers.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A cemetery housing wild west legends in South Dakota.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

Every president in history is immortalized in bronze in downtown Rapid City.