Pocket of Russia — the official historical nickname of Nizhny Novgorod, usually mentioned in the context of the equally ancient name Nizhny Novgorod" (Nov-Grad Nizhny).
The name is associated with the relocation of the annual Makaryev Yarmarka to Nizhny Novgorod and the significant increase in trade turnover through Nizhny Novgorod in the 19th century, particularly with eastern countries (Persia and others).