The tar paper flashing around the chimney (third photo) is both ugly, and tells me the house has a severe leaking problem.
To me that looks like metal rather than tar paper flashing.
He had dramatic architecture but Sometimes at the cost of some structural, glazing,or roofing problems. (Johnson and Johnson headquarters. The Glass roof—as you would expect—leaks a lot. “Falling water” had some problems with the glass walls.