Troitsky (Trinity) Prospekt is an avenue in the Admiralteysky district of St. Petersburg. Passes from Izmailovsky to Lermontovsky prospect.
House number 1-3 – Alexander Hospital, a complex with a territory, a garden and a fence and a pedestal from the lost bust of Alexander II. architectural monument (regional).
House No. 6 – the building of the workshops of N. E. Freiberg (Glebovoy), 1898, architect A. I. Reinboldt.