I´ve seen this building on TV (2nd picture), it´s an ancient watermill built by the Roman in France, and I wanted to rebuilt it (with some changes).

The whole building is about 100 blocks long and high, it connects two lakes with a water level difference of round about 90. I´ve built it in a self-made Worldpainter map on a mountainside with a constant slope of 40°.

My watermill of Barbegal consists out of 16 small houses, 8 water wheels between them and 2 staircases next to the houses.

Each house has a connection to the one above and below it and 4 floors. These floors are mainly filled with hay, but there are also some chests and a millstone.

(I´ve just recognized that there´s a mistake concerning the download. I accidentally uploaded the world where I´ve tried to build this mill for the first time and not the real world on the pictures. I also can´t find the real world in my folders and I´m too lazy to rebuild it. Sorry for my mistake...)