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Museum open to public by appointment only.
The Iron Man Museum, also known as the Hendy Iron Works Museum, is located within the Northrop Grumman Corporation Marine Systems Plant in Sunnyvale, California on Hendy Avenue.
In 1856 he started the Hendy Machine Works as a sole proprietorship in San Francisco which went on to fabricate a large variety of iron and steel products and became the second largest iron and steel fabrication shop in that city during the last half of the 1800's.
Declared a National Landmark in 1978, The Northrop Grumman Corporation, Marine Systems facility in Sunnyvale, California now occupies the historic site of the Joshua Hendy Iron Works, carrying on a tradition of manufacturing unsurpassed in its large-scale and duration by any other West Coast firm.