Aquarius Max for years provides top-quality, modular asset packages. And even it's just a one-man indie team, he is providing superior support.
Some of his greatest packages are Survival Crafter: Housing and Structures Medieval Mega Pack Ancient Set - Temples, Ultimate Medieval Constructor, but he also has some low poly kits like Ultimate Poly Fantasy, or Stylized Poly Rock Formations. On top of that, you can get most of his packages in one bundle with a great discount on Aquarius Max's Massive Environment Bundle Pack.
If you want to populate your map with buildings foliage and props, we highly recommend checking what Aquarius Max has to offer.