This is the Solovetsky Monastery, one of the most famous monasteries in Russia. A monastery since 1436, it was a prison camp during 1920s and 30s Soviet times. The monastery was established once again in 1990. Nowadays it is a place popular with both tourists and pilgrims.
In the native language of the webcam owner
Соловецкий монастырь, вид с Северо-Запада.