411. Hundertwasser House is an interesting combination. It looks like they slapped a bunch of facades and styles onto an old building.
417. Can't really say it's a Gaudi style although it reminds me of his works in Barcelona ... although the innovation is up there.
423. Compared to the above, the other buildings in this district are monotonous and boring.
429. I really like this one. The main room around the bend would have windows on 3 corners, making it very bright. I wonder if it opens up to the 2 balconies.