What features does every map in Don't Starve have?
I can't list all of them for sure, but I know there is always 3 plugged sinkholes, which lead to the caves. One spawns in the birchnut forest, near pig king. One spawns somewhere in the patchwork biome. One spawns in a forest in the center of your swamp. Some guy in the comments of the wiki page on wormholes also said there's 3 pairs of wormholes per world, but I'm not sure if that's true.