I really like what they've done with the Bundestag, aesthetically at least.
I've worked in enough modern office buildings with dodgy air conditioning to be suspicious of anything with a glass exterior.
They seem to be a lot more comfortable with rebuilding something that looks exactly the same in Europe. A lot of town and city centres that look historic have actually been flattened and rebuilt.
This building in Berlin is a total joke (although I'm sure some people think it's lovely)...
As a general observation about heritage requirements, they're often mucn more concerned with retaining the historic fabric than they are the appearance. I've worked on jobs where very dramatic visual changes have been preferred, over replacing something with a replica.
Put very briefly/simply...