This is my floating duck palace that I made for my ducks to keep them safe from predators and a place for them to lay eggs. Bottom is made of treated wood and the sides and top is cedar so it won't rot and keep it light weight. There is 2 x 2" foam blocks under the base to keep it on top of the water. It has room dividers and a removable top so I can make it 1, 2, 3, or 4 rooms. I also made some retractable walking planks so the ducklings could get up safe. I added a solar powered light to it so I can see it of a night. Guess it is a "Vacancy" light....lol This picture is of my son when we finally got the palace on water. I have it on a pulley system attached to the dock so I can pull it in and get the eggs out each day. All the hens use it daily. Nice addition to the lake.