Nation's Giant Hamburgers Share Nation's Giant Hamburgers 1900 Contra Costa Blvd APleasant Hill, California 94523 (925) 798-4280 Hours: Sunday - Thursday: 6:00am - 2:00am Friday - Saturday: 6:00am - 3:00am Website Save Nation's Giant Hamburgers1900 Contra Costa Blvd A Pleasant Hill, California 94523DetailsOpen in Google Maps Map Cuisines Details American