The Peter and Paul Fortress is a historical monument in Saint Petersburg, Russia, which holds a significant place in the city's past. Founded by Tsar Peter the Great in 1703, the fortress was originally constructed to secure the area from Swedish attack during the Great Northern War. Over time, it served various functions, including a military base, a royal burial ground, and, notoriously, as a political prison. The central structure within the fortress is the Peter and Paul Cathedral, an elegant example of the Russian baroque style, with its distinctive tall, gilded spire reaching skywards and acting as a prominent feature of Saint Petersburg's skyline. The cathedral houses the tombs of nearly all Russian tsars from Peter I to Nicholas II. The fortress is also known for its bastions, where political prisoners were held, including prominent figures like Dostoevsky and Trotsky. Today, the fortress is a part of the State Museum of Saint Petersburg History, offering visitors a rich experience through various expositions and historical artifacts, as well as panoramic views over the Neva River and the rest of the city.