Is this not the best manhole cover ever? I thought so when I saw it. I wondered why Jacksonville's sewer manhole covers depicted a cowboy waving his hat, and as it turns out, it's actually the city's official insignia and the dude on the horse is none other than President Andrew Jackson, this fair city's namesake.
There's a very famous statue of Jackson and his horsie in this Roy Rogers position in Washington DC's Lafayette Square. There's also a duplicate in downtown Jacksonville but I haven't seen it (I tend to avoid downtown Jacksonville, preferring the laidback vibe of San Marco.)