We were in Berlin for a week and had a great time. We posted just one physical postcard from the hotel sending our other friends a digital postcard with a collage picture we hoped they would enjoy.
In all our time there we did not see one postbox.
I know they are yellow. If they were there, they were not obvious! I don't mind as it probably saved me many Euros in postage and postcards. Also, from abroad some postcards take ages. By email, they got them very quickly.
