@Micah Well, I think that on Easter Weekend most of your options include walking around the city and checking out things like architecture, parks and outdoor cafes. Most--if not all--museums are closed for the weekend because Easter is a national holiday. So if you haven't walked around <a href="http://en.wikipedia.org/wiki/Borisova_gradina" rel="nofollow">Borisova Gradina</a> you should do that. If you haven't had a beer or a coffee in the little park in front of the church on Graf Ignatiev behind the fruit and vegetable market I'd recommend that as well.  Anther park/garden that is normally bubbling with activity is the park in front of the National Theater.