Online Highways Home > Massachusetts > Gloucester City Map with Features Hammond Castle Museum John Hays Hammond Jr., one of America's premier inventors, built his medieval-style castle between the years 1926 and 1929 to serve both as his home and as a backdrop for his collection of Roman, medieval, and Renaissance artifacts. In addition, the building housed the Hammond Research Corporation, from which Dr. Hammond produced over 400 patents and the ideas for over 800 inventions. His most important work was the development of remote control via radio waves, which earned him the title, "The Father of Remote Control." In addition to self-guided tours, Hammond Castle Museum offers a number of educational programs. Read reviews and find hotels in Gloucester. Location: 80 Hesperus Ave, Gloucester Massachusetts 01930 Telephone 978-283-7673 See more History. Other upcoming events include:

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