The Island of Buda, which is a fluvial maritime island that makes up one of the best preserved wetlands in Spain, is located at the eastern end of the I'Ebre Delta, and belongs to the municipality of Sant Jaume d'Enveja in the Montsià region.
It is of alluvial origin since it has been formed from the sediments left by the Ebro river just before its mouth. Its shape is that of an inverted triangle with the vertex to the south, and is surrounded by the two arms of the river, the main (the gola de de Llevant) alnorte, which separates it from the Illa de Sant Antoni and the secondary (the gola from Mijorn) to the west; on the east side, with the beach of Buda, it is bathed by the Mediterranean and ends at the eastern end with the cape of Tortosa, near which the Buddha lighthouse was erected.
Inside there are the freshwater lagoons of Calaix Gran and Calaix de Mar, which are habitat for a good number of bird species.
In 1924 the Island of Buda was acquired by the current owner of the northern half, the Borés family, the other half being owned by the Departament de Medi Ambient of the Generalitat de Catalunya. It had about 300 inhabitants during the 1950s, when some sixty families settled there to grow rice. Inside we find the farmhouse built at the end of the 20th century, with a chapel that also served as a school.
In those days, major parties were held and organized and even a football team was created. Currently, however, although rice is still cultivated, in Buda there are only two older couples left. Located within the Natural Park of the Delta, to access it is necessary to have an express authorization.