Coordinates: 59°55′38.14″N 30°19′14.44″E / 59.9272611°N 30.3206778°E
The Assumption Church on Sennaya Square in St. Petersburg was a Late Baroque penticupolar church underwritten by Orthodox merchants trading at the nearby Sennaya Square market.
The church originated as a wooden building transferred across the Neva from the northern part of the city. It was rebuilt in stone in the 1750s to a Rastrelliesque design attributed to Andrey Kvasov and was slightly modified on several occasions, most importantly by Luigi Rusca in 1817. The church boasted a high belfry of three storeys, a gilded icon screen, and many valuable items. Its parish was one of the richest in the city.
The large building with the distinctive dark-green jug-like domes, popularly known as the Saviour Church, used to dominate the surrounding district. It gave its name to Spassky Island (the central parcel of the downtown wedged between the Fontanka, Moika, Griboyedov and Kryukov canals) and Spasskaya metro station.