Timing is always everything, isn't it?
I finally arrived in Berlin last night, 13 March. As of 14 March, everything here is closed, all museums on Museum Island, Reichstag, Potsdam Palaces, etc. I suppose I will go out to Potsdam at some point just for the gardens, and count that as a Site visit.
Czechia was supposed to be next, but that border is now mostly closed.
And now two non-virus-related, but really annoying, logistical problems have cropped up, so I have no idea what will happen over the next few weeks. I think I should just find some nice, dark cave somewhere, and just live there for a few months!