Concrete Floor, Soaking Tub, Open Shower, Freestanding Tub, Windows, and Skylight Window Type This converted attic in a turn-of-the-century building in Berlin’s Charlottenburg neighborhood has a large skylight close the bathtub, on the side-slope of the roof, which allows one to look up at the sky while having a relaxing soak.  Photo 7 of 10 in 10 Light-Filled Homes With Interesting Skylights