This star-studded Old Hollywood restaurant is where fettuccine Alfredo made its United States debut.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The famous blue house from the classic horror film "Halloween" is now a local landmark.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

A tribute to Ponce de Leon's supposed quest for eternal youth.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

One of the largest Native American shell middens stands 30 feet tall.

This aluminum airplane pays homage to the Flying Tigers of World War II.

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

A sculpture serving as an homage to Pope John Paul II.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

Breathtaking and huge 430 year old maps of Italy.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

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

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

The humble home where the famous beat author lived briefly and wrote one of his most famous works.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."