The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

Turntable anonymously received orphans, alms, and groceries.

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

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

The glowing blue Nymphaeum of Emperor Tiberius.

Geothermal waterfalls in Tuscany.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The "Mona Lisa" of funerary art.

During World War II, this rice mill became a Nazi concentration camp.

This natural gas vent certainly earns its name as the smallest volcano in Italy.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

This medieval Italian town is a sheer (and beautiful) cliffside defense.

A fairytale island floats in the middle of Italy's little-known Lake Orta.

The final resting place of the poets Shelley and Keats.

This portrait of Philip V is always hung upside down, in a protest three centuries in the making.

This amended headstone marks the grave of a participant in one of the most successful military deceptions of all time.

A breathtaking and biodiverse wilderness in the mountain setting of Ernest Hemingway's "For Whom the Bell Tolls."

The oldest Roman lighthouse still in use.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

Village situated on a narrow volcanic escarpment.

A small house sits between two huge rocks, with its back to the sea.

Since ancient times these picturesque springs have been providing bathers with healing waters.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.