Peter the Great was the famous Russian leader known for his extensive reforms and the founding of St. Petersburg. His reign from 1682 to 1725 was marked by efforts to modernize Russia, drawing inspiration from Western European practices. Peter implemented reforms across various areas, including the military, government, and economy, striving to transform Russia into a modern state. He established the city of St. Petersburg in 1703 as a "window to the West," promoting trade and cultural exchange. Peter’s ambitious efforts laid the groundwork for the emergence of Russia as a significant European power and had lasting impacts on Russian society.