When I saw the Nagakin Tower this month, I was expecting it to look rough, but the prime surviving example of Metabolist architecture almost bordered on sad. The whole building is covered in netting (birds? falling debris?), the windows are covered in newspaper or blocked by cardboard boxes, and the concrete is weathered and sooty. It is hugely out of character with the new and taller buildings around it and that makes it seem more unique and interesting. Worth visiting - if only to see an example of how architecture might have been if different decisions were made and different paths taken over the last 40 years.