Take a look at the map of a large castle for MCPE, with its luxurious external decorations and giant halls. The castle is not really made to live in - it rather suits for a guild house or as spawn place on a server. The halls are filled with decorations but are lacking functionality, like smelting zones or storages.
Credits: Xeno of Cyprus
Enjoy the custom trees and fountains, and stained glass windows with your friends or alone.
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