Plan your visit well, especially if you go by bike, so that the high tide does not catch you, as the sand "becomes soft" making pedaling very difficult.
Castilla beach has about twenty km of coastline with very steep cliffs and immense undeveloped dimensions, an extensive and surprising rustic beach, almost virgin, where nudism is usually practiced, which can only be accessed through certain points, which are signposted.
Matalascañas has the unique privilege of enjoying the only possible access to the beaches of the Doñana National Park on foot and is also the gateway to the heart of Doñana from the El Acebuche Visitor Centre.