Need Ideas

For a builder app, you need something impressive. A good tower would look good, or a sharp and tall cathedral. Large ships and airships tend to be very impressive. If you can manage it, giant trees or large statues also look great.

I would stay away from castles or houses unless you can't find anything better to build, since those are kind of generic. You want your build to stand out, in terms of size, detail, design etc.

I somewhat disagree with the people who posted above, since pixelart doesn't show too much building skill, and the terracotta army is not very impressive given that its underground in a pit.

Perhaps the Terracotta Army pits in China? I know of only two people who have built it before, me and this kid on Youtube, and in my opinion, neither one of ours is all that great.

How about a Roman legion camp of The Great Wall of China

pixel art maybe? or a castle?

Please do something serious. Its for a builder app.

Something sexy, My IGN thing:EnderPvPsYT
Make a model