Ozerki (Озерки) is a suburb of Saint Petersburg in the Vyborg region (Выборгский район) of the federal district of that city.
During Tchaikovsky's lifetime it was the administrative centre of the Ozerki region (Озерках уезд) in the Saint Petersburg province (Санкт-Петербургская губерния) of the Russian Empire.
Tchaikovsky in Ozerki
Tchaikovsky visited Ozerki as part of a six-day trip around the northern Baltic (from 26 July/7 August to 1/13 August 1890). "I've been to Tsarskoye, to Peterhof, to Terijoki (Finland) with Menter, to Ozerki, and to Arkady, and generally spent a very pleasant time" .