The Bilbao City Hall was built in 1892 by the architect Joaquín Rucoba, the same architect who designed the Arriaga Theater, also in Bilbao. This building is in the French Second Empire style and stands out for its facade decorated with sculptures by Fiat and the team formed by Garamendi, Basterra and Larrea. Located on the site of the former convent of San Agustín, destroyed during the First Carlist War, the large square in which it stands is the most striking feature. In it, in front of the town hall, stands an iron sculpture by the Basque sculptor Jorge Oteiza. This sculpture, eight meters high, six meters in diameter and weighing 16 tons, has the name of Ovoid Variant. Although it is popularly known as the "half-sided txapela" for its shape that resembles this Basque accessory, it is actually an empty geometric body made of Corten steel, the material used to make the hulls of the ships that sailed the Bilbao estuary.