A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

An extensive collection of ancient Egyptian artifacts and mummies.

The headquarters of a secretive order is also a beautifully-designed park.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Breathtaking and huge 430 year old maps of Italy.

St. Francesca Romana, patron saint of drivers, resides in the church she founded.

The glowing blue Nymphaeum of Emperor Tiberius.

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

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

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The attic of a four-century-old canal house hides a clandestine church.

Christ's blood preserved in a Belgian town.

The final resting place of soldiers' loyal canine companions.

A six-ton wedding present for the King of the Scots.

A 18th century graveyard and its astonishing cortege of macabre iconography.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

One of Ireland's most infamous prisons for rebels including men, women and children.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.