This lighthouse model is slightly based on the Aniva lighthouse, but mostly just from my imagination.
Does not require supports. Use at least 20% infill and 4+ top layers to get the stairs to print properly. If you scale the model up, you might need to set these even higher. Depends on the printer used. Pay attention to the stairs on your slicer to see if they align on the infill nicely, as that's what supports them.
Default size is 81x80x111mm, which at 0.2mm layer height takes about 3 hours.