From the Wikipedia page 
Petrogradsky District (Russian: Петрогра́дский райо́н) is a district of the federal city of St. Petersburg, Russia. It borders the Bolshaya Nevka River in the north and in the east, the Neva River in the south, and areas around the Malaya Neva River in the west.
Petrogradsky District comprises the following municipal okrugs:
- Aptekarsky Ostrov