Los Caserones Monument · La Aldea de San Nicolás, Gran Canaria - Oeste, Las Palmas Archaeological site declared a Bien de Interés Cultural (Spain's top heritage-protection category), with remains of aboriginal dwellings documenting the pre-Hispanic occupation of the La Aldea valley. Photo: Victor R. Ruiz from Arinaga, Canary Islands, Spain (CC BY 2.0) What to see and do in La Aldea de San Nicolás