In addition, the Monumental Zone of Iquitos (Historic Center) has several structures that have been designated as part of the Cultural Heritage of the Nation: the Cathedral of Iquitos, the Casa de Fierro (Iron House), the Old Hotel Palace, Cohen House, and more than 70 other buildings. Other landmarks are the Plaza de Armas; Jiron Prospero, an avenue that is the site of several shopping and historical areas; and the lively neighborhood of Belén, often dubbed the "Amazon Venice" for its many waterways. The city is also home to the Amazon Library, one of the two most important in Latin America.