Which modern fantasy series (last decade, so to speak) has the most in-depth worldbuilding?
Obviously it's an opinion question. And specifically, I'm just curious about the breadth (not quality) of the world-building. I don't want to just assume X or Y. Just curious to hear people's thoughts and learn about what's out there. It's okay to reference outside the last decade if there are nothing that compares, but genuinely curious about current series.