Breathtaking and huge 430 year old maps of Italy.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

Eighty million natural history specimens call this gargantuan museum home.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The bones of two medieval royal lions were discovered at the historic fortress.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

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

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

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

A local museum honors the overlooked discoveries of Mary Anning, one of the first professional fossil hunters.

Two stone columns flank the grand Venice square, but there were supposed to be three.

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

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

"We Seceded Where Others Failed."

The island residents are known for taking their quirky sense of humor with them to the grave.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

The museum chronicling a treasure hunter's dream, fulfilled.

A historic presidential getaway on the continental United States' southernmost island.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.