The Casa Histórica de Tucumán is a historic building and museum located in San Miguel de Tucumán, Argentina, built during the colonial times. The Congress of Tucumán worked in this house during the Argentine War of Independence, and issued the Argentine Declaration of Independence on July 9, 1816. It was nationalized decades later, and partially demolished for its poor condition. It was declared a National Historic Monument of Argentina in 1941, and reconstructed, with simplified details, in its original layout.