This plaza has benches along both sides of a curved wall. One side of the wall (see below) is lined with plaques — like the one on the right for the U.S. Merchant Marine:
The other (west) side is as peaceful — not counting the bursts of traffic along Aviation Parkway (which runs just south of the Plaza):
Location: On Richey Boulevard just north of Aviation Parkway.
Hours: 24 hours, but there's not much to do at night! I've seen homeless people sleeping in the area; you might want to leave them in peace and come back during the daytime.