Ключевые слова: conservation, ecosystem, environmental wealth, facades, fras, heritage, houses, housing, legal status, monumental complexes of spain, national park, natural beauty, nature protection, neighborhood, park, phytozoogeographic, place to live, population, protected area, protection, reserve, scientific region, small community, society, towns crossed by the ebro river, towns of fras, towns of the association the most beautiful towns of spain, typical houses, villa, whole houses, wildlife, wildlife refuge,