State Museum of the History of St. Petersburg exhibitions began in 1957, celebrating the 250th anniversary of Leningrad. The museum contained over 1 million objects in 2002, including the collection of architects documents, photos and plans of Saint Petersburg of the 18th–20th centuries. State Museum of the History of St. Petersburg The State Museum of the History of St. Petersburg (), formerly the Museum of Leningrad History from 1955 to 1991, is a museum of the city history in Saint Petersburg, Russia. The headquarters of the museum are located in the Peter and Paul Fortress. It was established in 1938 as the Museum of History and Development of
20th-century classical music explored in their respective articles. At the end of the 19th century (often called the "Fin de siècle"), the Romantic style was starting to break apart, moving along various parallel courses, such as Impressionism and Post-romanticism. In the 20th century, the different styles that emerged from the music of the previous century influenced composers to follow new trends, sometimes as a reaction to that music, sometimes as an extension of it, and both trends co-existed well into the 20th century. The former trends, such as Expressionism are discussed later. In the early part of the 20th century, many composers wrote