The Imperial Palace of Vienna is frankly overwhelming, whether you are a traveller on a 24-hour schedule or a lifetime local. It comprises 30+ buildings on a terrain the size of 34 soccer fields.
As a 30-year local, I have had the luxury to slice and dice the Imperial Palace over time. My favourite places are the Museum of Fine Arts, the Albertina, and the Palmenhaus restaurant and surrounding Burggarten park. And I love balls at the Redouten Halls!