The Roman temple is a tribute to the classic Hirst Arts design. It is 28mm scale, I haven't tried scaling it.
https://hirstarts.com/temple/temple.html

I built it in layers as an experiment for overcoming overhangs meaning each layer can be built without supports. If your print doesn't work out just right you can trim the insert tabs back until they fit - I had to do this for fitting layer 3 at the steps.

Layers 1, 2 and 3 are printed the 'right' way up. The pillar heads, layers 4 and 5 are printed upside down.