Yeah, if you zoomed in on the photo of the Austrian building, it has a small pond (reflecting pool) underneath which isn't obvious. It appeared more like a floor of green grass probably due to the moss/algae that have accumulated in the water over time. 😁
I'm definitely excited and I look forward to those boat-shaped buildings that you've photographed for publishing in the future. They would be interesting masterpieces of architecture to witness! 👍😊