What's other crap I can do after visiting these 2 zoos, assuming I arrive there by opening time?
That's not terribly respectful...
I don't know if that's a common figure of speech in the US but it's not a particularly nice phrase to use on this side of the pond.
Ok lemme rephrase what I meant. In terms of cool attractions within these cities, what's near enough to the 2 zoos that I can fit them for the later part of the day?
The Basilica de Santa Maria del Mar and Cathedral of Barcelona are both nearby among fairly nice streets so I'd recommend those two churches.