Mapping Model Resources?

Sorry for intruding the modelling section with a half mapping question but i was wondering if anyone here knew any good resources for source models that i can use in a map. Nothing specific, just any archives or sites that may have resources. I am learning to model, but making smooth surfaces is taking me a while and my specialty is mapping/textures not modeling.

I’m not totally sure if that’s what you want, but it’s mapping stuff

No, not prefabs, a collection of models.

Something like this.