Hundreds of lucky felines haunt the ruins where Caesar was murdered.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Architectureal fantasy quarter of Rome.

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

The final resting place for the remains of 143 Habsburg royalty.

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

Ancient, mysterious stone altars are hidden among wild woods in central Italy.

What appears to be an ancient Roman temple is actually a Catholic church.

This region of the Perugia municipality has an unforgettable name.

The eerie ruins of this feudal fortress witnessed the execution of 60 conspirators in 1387.

Nestled in the hills of Tuscany are gorgeous, multicolored hot springs.

This lesser-known leaning tower is all that remains of the medieval castle of Vernazzano.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Water and windows define this defensive Italian well.

Nine caves filled with recently-discovered archaeological finds under the houses and the streets of the most ancient district of an old town.

A magnificent Neogothic tomb hides within this Italian fairytale-like forest.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

This 16th-century monastery has been turned into a surrealist architecture compound.

Three bridges straddle a stream, one stacked upon the other.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

A breathtaking flower tunnel bursts with beautiful golden blossoms.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.