This application is for the beginner or advanced artist who wants a step by step, how-to for drawing accurate structures easily in a few minutes. 
Quickly draw famous buildings from around the world.
If you have a budding artist who likes architecture, this is a good tool to getting started. Once the structure is drawn then they can embellish it with their own imagination!
I highly recommend this app and others from the "Draw 50" series to anyone who is interested in drawing.