The rain streaks look great to me as well! Its kind of like a pair of well worn leather shoes has creases and lines where the foot bends or how a well worn pair

The rain streaks look great to me as well! Its kind of like a pair of well worn leather shoes has creases and lines where the foot bends or how a well worn pair of jeans fades on the knees and wrinkles. Not that I am against a roof for this building, or even adding some materials like brick or maybe timber could be interesting. I think this about lots of 'brutalist' buildings: theyre gorgeous as is and might be improved a bit and receive less hate if they used more materials than just concrete and glass. Brick, Timber, and stone even after all people love all the Frank Loyd Wright stuff and he used plenty of raw materials.