I like castles because they are about history, stone and endurance. Castles are fun to make with ASCII Art. The shapes suit text characters. A lot of it is plain up and down and side to side. There aren’t many circular shapes.
Some artists add shading to their castle art. I haven’t gotten that far with my own. But, I did make an ASCII art sandcastle as my very first castle done in text art. The interesting thing was finding a way to make sure my sandcastle looked like a sandcastle rather than a stone castle. I added the shovel. Don’t think I’m just naturally brilliant. I had the idea from a drawing in a colouring book. It worked great. Mine was the first and only ASCII art sandcastle for a long time.