The Sister, War memorial in Sestroretsk, Russia

The Sister is a war memorial built in 1966 on a low natural rise at the mouth of the Sestroretsk River, 38 km along the Primorskoye Highway. A concrete path leads from the road to a pedestal with a stela showing a Soviet soldier raising his hand and the hammer and sickle. The stone composition continues like a waving ribbon inscribed: "Immortal is your feat, defenders of Leningrad, 1941–1944"; three flagpoles stand to the left, and scattered concrete barriers symbolize aerial bombs.

The memorial was built in 1966 to designs by architects M. E. Kolosovsky and L. M. Berlinerblau, with artist G. A. Peisis. In 1969 it was among the first monuments incorporated into the Green Belt of Glory around Leningrad, together with the nearby White Island memorial, at the 38th kilometre of the Primorskoye Highway where fighting was heaviest. It is a federal-level historical monument.

The memorial joined the Green Belt of Glory in 1969, when Sestroretsk's two existing monuments, "Sestra" and "White Island", were incorporated into the new belt around Leningrad. A birch alley laid out exactly along the defence line was included with them, marking the fighting at the 38th and 39th kilometres of the Primorskoye Highway.

The memorial stands on a low natural rise at the mouth of the Sestra River, 38 km along the Primorskoye Highway near Sestroretsk, and is visible from a distance. A short walkway of concrete slabs leads from the highway to the pedestal. The site is a federal-level historical monument, so it can be visited freely; the three flagpoles stand to the left of the composition.

The memorial is a stela of a Soviet soldier with one arm raised, carved with the hammer and sickle, followed by a stone ribbon bearing the words "Immortal is your feat, heroes of the defence of Leningrad, 1941-1944". Three flagpoles stand to the left, and scattered concrete barriers at the end stand for aerial bombs.