Mansion Alzaga Unzue (Four Seasons Hotel annex) Félix Saturnino de Alzaga Unzué had this imposing mansion built as a gift for his wife, Elena Peña Unzué.They were married on May 8, 1916 marble in different colors from the Italian quarries of Carrara or Calacata, from the Pyrenees and from the French Massif Central, almost all the furniture Louis XV and Louis VXI style, ironwork, taps, many of the openings and even collections of oriental art from the 17th and 18th centuries, bought in Paris. It survived the bulldozers that widened Avenida 9 de Julio and took with them unrecoverable architectural wonders.