Don't know much about history

You look at this picture and you probably think it's inane. Here's the secret: it's not inane, it's art. Yep, there's a plaque on that utility cover in the foreground. A significant plaque. Well, OK, I'll let you judge for yourself (I assume a singular readership here, and I don't mean distinctive, I mean unary).

The plaque reads as it says. Kirkland, WA.