For more info try this Link to Google maps

PARKING MAP
Stone Gardens Parking is located in the lot to the west of the building and behind the building. If parking behind the building please park at least 6 feet away from the train tracks. Do not park in the lot to the north of the building, if you park in the north lot your car will be towed. On the map below Yellow areas are Stone Gardens Parking and Red areas are No Stone Gardens Parking.
You can also park in the Ballard Lock's parking. The parking is free after 6pm and on Sunday, orange area on the map below.