New Holland Island is a historic triangular artificial island in central Saint Petersburg, Russia, dating from the 18th century. It is also known as Admiralty Island.

The Moyka is a short river in Saint Petersburg which splits from the Neva River. Along with the Neva, the Fontanka river, and canals including the Griboyedov and Kryukov, the Moyka encircles the central portion of the city, effectively making that area an island or a group of islands. The river derives its name from the Ingrian word Muya for "slush" or "mire", having its original source in former swamp. It is 5 kilometres (3 mi) long and 40 metres (130 ft) wide.