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

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

Houses are tucked between, on, and underneath giant boulders.

The ruins of a 2,000-year-old Roman fishing village perched on one of the best beaches in Spain.

For more than two centuries, the canopy of this venerable tree has been a haven for songbirds and lovers.

This architectural beauty is the home to a personal collection of more than 600 examples of mechanical musical instruments.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

The ruins of this temple were later chosen by Pope Celestine V to found an abbey and a hermitage.

A Roman temple perched over an Italian town, forgotten several times over.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

This stretch of the ancient Roman road is preserved in a valley that witnessed many battles and legendary highwaymen.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

This charming candle shop has been in business since 1789.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

The world's oldest bookshop still in operation.

A secret climbing tree hides along the side of a Costa Rican road.