Casa Massieu Van Dalle, en el Llano de Argual Monument · Los Llanos de Aridane, La Palma, Santa Cruz de Tenerife Image of Los Llanos de Aridane, not of the place itself. A 17th-18th-century manor house in the Llano de Argual, the economic cradle of the Aridane valley, with what is described as the finest crenellated portal in the Canary Islands. It now operates as a cultural centre. Photo: Jarek Prokop (CC BY 3.0) What to see and do in Los Llanos de Aridane