The majestic General Staff Building, completed in the 1820s, is one of St. Petersburg’s grandest architectural monuments. A triumphal arch connects two buildings that once housed various ministries. The crescent formed by the buildings faces Palace Square, while the arch leads to Nevsky Prospect, the city’s main thoroughfare. The General Staff Building is now part of the Hermitage Museum and temporary exhibitions are shown here. Eventually it will house a portion of the permanent collection.