ARCH Keystone Cities represent a cohort of cities interested in increasing the resilience of their historical areas. They take part in knowledge exchange with ARCH Foundation Cities, a process that is based on mutual learning approaches, where both city groups (Foundation and Keystone) act at the same time as mentors and mentees.
Keystone cities, and the Foundation Cities with which they have been partnered (marked in bold script) are listed below:
Appignano del Tronto, Italy
Rhodes (Dodecanese), Greece