A circular castle keep with a moat that is perfect for small plants and succulents. If you want to use it for larger plants you will need to resize it. I recommend a base layer of gravel to help prevent getting potting soil in your moat water.

I have printed it using PLA.

The print makes a support structure under the overhang on the top parapet that you will need to remove. Feel free to use any material you want, (I've experimented with glow in the dark, it's REALLY cool:) but the stone imitating PLA would probably give you the most accurate castle look.