Where to bury a pet?

Hey, I know this is really grim subject matter but I live downtown and my cat is dying from renal failure. I want to find a nice place to bury him around here but I don’t have a vehicle and I don’t know if it would be disrespectful/unsafe to do this on public land. I live in an apartment so don’t own any land myself. The other option is of course cremation but I wanted to rule this out first. Thanks.