The International Ancient Wall and Castles Alliance is a non-governmental organization jointly initiated by Xi 'an City Wall of China, the Ancient City Wall City Alliance of Veneto Region of Italy, and the City Wall Management Authority of York city of England.
The purpose of the alliance is to strengthen the protection and utilization, tourism and management of ancient city walls worldwide, and to promote cultural exchanges and cooperation between the city wall management institutions and individuals as well as internationally.
When representatives of the Ancient City Wall Alliance of Veneto Region visited Xi 'an City Wall in 2019, the Xi 'an City Wall Management Committee proposed the idea of establishing the International Ancient City Wall (Castle) Alliance, which received positive response from the Italian side.In 2020, the City Wall of York in the UK was actively involved and also became one of the three founding institutions.
On December 3, 2020, the city wall management organizations from Xi'an (China), Veneto (Italy), and York (UK) held the online signing ceremony of Declaration of Collaboration on the International Ancient Walls and Castles Alliance.