The Arch of Peace is neoclassical triumphal arch, 25 m high and 24 m wide, decorated with a number of bas-reliefs, statues, and corinthian columns. Bas-reliefs and statues are made of a variety of materials, including marble, bronze, wood, and stucco. Many of such decorations, especially bas-reliefs, are dedicated to major events in the history of Italy and Europe, such as the Battle of Leipzig, the foundation of the Kingdom of Lombardy–Venetia, the Congress of Vienna. Other decorations have classical mythology subjects such as Mars, Ceres, Minerva, Apollo, and Victoria-Nike. There are also a group of statues that are allegories of major rivers in North Italy such as the Po, the Adige and the Ticino.