Piscina das Marés, located in Leça da Palmeira (Matosinhos, Porto), is a UNESCO-noted architectural marvel designed by Álvaro Siza Vieira. Built between 1961–1966, this saltwater tidal pool blends seamlessly with the rugged Atlantic coastline, offering a serene yet dramatic bathing experience. The expansive beach features golden sands popular since the early 20th century, now complemented by the pool’s minimalist concrete design that frames ocean views. Visitors praise its tranquil vibe, clean facilities, and shallow areas for families[1][4].
Open daily 9 AM–7 PM[5], the site attracts architecture enthusiasts and beachgoers alike, with lifeguards on duty and landscaped sunbathing spots. Nearby cafes like Bar Piscina das Marés provide coastal dining, while the crashing waves create a soothing backdrop[3][5].