The Arsenal on the Charles (also known as the Historic Watertown Arsenal) is registered on the National Register of Historic Places and is the world HQ of athenahealth. In 2014 Graffito was engaged by athenahealth, the site’s owner, to develop a retail and place-making plan for the campus, which was then going through a series of major capital improvements to its parks and buildings. Graffito initiated the site’s (and Watertown’s) first farmer’s market, a temporary retail program, a site-wide fitness and games program, arts programs, and leased a vacant former bank space to Branch Line, a critically acclaimed local restaurant now in its fourth year of operation.