What media has your favorite worldbuilding?

I consider lore and worldbuilding to be related but different concepts. Lore is the details of your world, worldbuilding is the way you deliver those details.

My favorite example of worldbuilding is The Dark Crystal, both the film and series. The lore is standard fantasy stuff, but the intricacies of the world are so rich and they unfold so naturally. It felt like a real world, and I felt like very little of what I learned about that world was simply narrated to me. The world was built through tiny details, interactions and observations, throwaway lines of dialogue, and effectively so.