The four Richmond Shipyards, located in the city of Richmond, California, United States, were run by Permanente Metals and part of the Kaiser Shipyards. During World War II, Richmond built more ships than any other shipyard, turning out as many as three ships in a single day. The shipyards are part of the Rosie the Riveter/World War II Home Front National Historical Park, whose Rosie the Riveter memorial sits on the former grounds of Shipyard #2. Shipyard #3 is listed on the National Register of Historic Places.