This island fortress was constructed in the mid 1700s, when Finland was still part of Sweden. It is a World Heritage region which actually consists of several islands with several fortress on them. It is also a residential region with a community of people who live in and around the historic buildings and walls. This image shows the connecting tunnels joining several small rooms within one of the fortress walls. These rooms were unoccupied but in other sections the internal spaces of the walls provide residences and work studios.
