I put a lighthouse on top of two levels of terraforming so it's high up!
this is the only picture of it i have on me at the moment, since it's too early/dark in my town for me to take a better, more top-down view of it, but, yeah, i just threw a lighthouse up there, dug in a couple of waterfalls, added some flowers, and that was it.
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Lol mine is VERY similar, I also put my lighthouse on a cliff with a little waterfall, but I put the telescope instead of a bucket.