Considering the Ekaterina - Tsarskoe Selo in Saint Petersburg?
A VT member wrote the following comment about visiting Saint Petersburg:
First - to visit the Hermitage... by max_iakov
First - to visit the Hermitage - one of the greatest museums all over the world;
Second - to take a trip by motorboat via rivers and canals around the city;
Third - to drink a glas ( or more :) of the local beer - Baltika # 10 - preferablethe white nights season in June