These brick buildings were built by the British Navy in the late 1800's to store gun powder and projectiles, and they are the oldest military buildings west of Winnipeg, Canada.
In June 2006, Cole Island was officially recognized as a national historic site. It was designated part of a "National Historic District" by the Historic Sites and Monuments Board of Canada. The district is considered to be the "most complete site of Royal Naval activity and infrastructure in the Commonwealth".
http://members.shaw.ca/cole_island/