Moreover, it does not need to stay restricted to buildings only, and you can definitely derive other interesting ideas.

Now, even though you are a grown-up, what harm will it be to recreate such a drawing? Though the subject of the drawing remains the same, you can, however, experiment with its idea and modify it a bit just so it gets the artistic vibes. As a child, you must have drawn the city-view drawing, where each building stands by one’s side and a series of glimmering windows peeping from them.