Sennaya Square, known as Peace Square between 1963 and 1991, is a large city square in Central Saint Petersburg, located at the crossing of Garden Street, Moskovsky Prospekt, and Grivtsova Lane. The square was established in 1737, and was a market where hay, firewood, cattle were sold. It was built under the extension of the Garden Street, and grew quickly, becoming the cheapest and the most active market in Saint Petersburg.