Kanonersky Tunnel
Kanonersky Tunnel is a tunnel under the Sea Canal in the Kirovsky District of Saint Petersburg. The tunnel provides a link between Kanonersky Island and Dvinskaya Street on Gutuevsky Island. The tunnel was constructed in 1983 by using Immersed tube method.
Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).