Gatchina - where is it?

On the rail-way station Baltijsky in St.Petersburg get the electric train just to Gatchina (Gatchina Baltijsky station). It will takes no more then 10-15 min. from the station to the Gatchina's Palace (see the map below) and go ahead...

1. Gatchina Palace with Parade-ground and the monument of Paul I
2. Gatchina-Baltiskaya rail-way station
3. Gatchina Palace's Park
4. Priory Park
5. Priory Palace
6. Raund Riga
7. Amphitheater

Inscriptione on the one of Park's building: "The object is guarded by the Order of the Templars". This is Gatchina!