Minecraft wiki entry for Defeating_a_woodland_mansion, associated text: Making houses with the dark oak wood from the nearby trees around the mansion can turn the area into a nice looking village. Be sure to make a villager breeder consisting of at least 2 villagers (you can bring villagers from another village or cure any zombie villagers you find) to populate the mansion. Make job sites for the villagers and put beds in the upper rooms of the mansion. After you get lots of villagers and claimed beds, iron golems can spawn and protect you and the villagers from hostile mobs such as zombies and skeletons.