St.Petersburg Card recommends!
Aquatorium of Peter the Great
Boat tours along rivers and canals
Hermitage Rossi (The General Staff Building)

Museum Palaces

Stroganov Palace

aristocratic residence of the famous Stroganov family, facing Moyka river and featuring lovely baroque exteriors

Marble Palace

a neoclassical building with natural marble facades, built for Count Orlov - Catherine the Great favourite