Our hostel in Leipzig was situated in an enormous old building that was originally a post office. It felt strange to walk into such an old building and have the sliding doors open up to the spacious modern lobby with its neon bar.
From our window, we could see the Hauptbahnhof, the largest station in Europe (going by floor area). Lit up at night, we could even make out trains arriving and departing. Along with the traffic that swirled around it, it was beautiful.
(We preferred our old post office to the new one erected just a few blocks away - though the PO boxes there sure made for a good photo.)