The Peter and Paul Fortress is a historic citadel located on Zayachy Island in Saint Petersburg, Russia. Founded by Peter the Great in 1703, it served as a defense against potential attacks and marked the beginning of the city’s construction. The fortress features impressive architecture, including the iconic Peter and Paul Cathedral, which houses the tombs of Russian emperors. Today, the fortress is a popular tourist attraction, showcasing museums and exhibitions that highlight its rich history. Visitors can explore the well-preserved walls, bastions, and the beautiful grounds, making it a significant cultural landmark in Saint Petersburg.