世界文物古迹的保护已有200多年历史,但古城保护的历史还不足百年。实际上古城保护的源头可追溯到工业革命时期,但直到最近50年,古城保护才在理论和实践上有较大发展,经历了一个由古迹的单体保护到保护古迹所处的历史环境和历史地段(街区),进而扩大到保护历史古城的发展认识过 The protection of world cultural relics and historic sites has been more than 200 years old, but the history of ancient city protection is less than 100 years. In fact, the origin of the ancient city protection can be traced back to the period of the Industrial Revolution. But in the last 50 years, the protection of the ancient city has been greatly developed in theory and practice. It has undergone a historical environment in which the protection of monuments is protected by the protection of monuments. Historical areas (blocks), and then expanded to protect the development of historic cities