Italy's ancient city of Bailu Rizhio (CivitadiBagnoregio) Civita di Bani Oregio(CivitadiBagnoregio)- in Lazio, Vitebo Province, about 120 kilometers north of Rome, built 2,500 years ago, located on the top of the mountain, connected to the outside world by only a narrow long bridge, looking like an air castle from a distance, It is known as the City of the Sky. It has been abandoned for hundreds of years and is also known as the ghost city. The inspiration for a famous animated film, City of the Sky, produced by Japanese animation master Miyazaki. This ancient village is located on a huge limestone in a steep valley, connected only by a long[1] stone pedestrian bridge, much like the scene inside the City of the Sky, moving, dreamy. The ancient city is not big, it takes less than half an hour to walk, the islanders generally live in the summer tourist season, other seasons will be relatively deserted, there are basically no residents in the small city, many of them are locked.