Small Arms Inspection Building was originally part of a large munitions plant built in 1940 before it was acquired and renovated as an art centre by the City of Mississauga in 2018. With its female dominated workforce, Small Arms Limited manufactured thousands of rifles daily for the Canadian and Allied forces in WWII. In 1990, the TRCA conducted an environmental audit of the site, revealing the presence of polychlorinated biphenyl, volatile organic compounds, and combustible gases across nineteen acres. More than 70,000 tons of contaminated radioactive soil was removed to eventually transform the Arsenal Lands into a park.