Gingerbread house is a famous building from fairy tales that will bring you a Christmas atmosphere. There is a lot of rooms inside the house, it was built for a big family, I assume, or to store a food. If you're a kid, you'll probably don't want to come too close to it, who knows, maybe there is an evil witch inside. You can live there or stage a show with Christmas characters.
How to install maps:
Download .mcworld file below
Open file using any file manager to import it into Minecraft PE
Open Minecraft Pocket Edition and look for the map among your worlds