Nostalgic Pittsburgh Symbols / Art for a Tattoo?

Not sure if this is allowed here, but as a Pittsburgh native born & raised for 20+ years and then moving, I've been collecting relevant tattoos when I visit home and was hoping someone might have an idea for my next one.

So far, I have one of a diplodocus (Dippy outside the CLP in Oakland) and a simplistic circle map of the confluence.

I'm a bit adverse to anything straight-up like a Steelers logo, but would probably do a Heinz ketchup bottle or something of that nature.

Does anyone have any creative art or tattoo ideas incorproating Pittsburgh symbols / nostalgia? . . . Edit: You all have had fantastic ideas and have given me a ton of routes to brainstorm, thank you so much!