What should I build in Minecraft Pe? - 1

How about a medieval city? Those with a castle in the middle, preferably on a cliff with a moat with the surroundings being the middle-class civilian population like blacksmiths, barracks, inns, markets, housing, etc. This part should be surrounded by a high wall with periodic intervals of watch towers and decorative TNT cannons. In the outskirts of the city, there should be the lower class civilian population like shabby housing, stables, farms, lumber mills, windmills, watermills, an occasional inn and guard houses.

Take some reference from Whiterun. This should keep you busy for a very long time. It did for me