The Basilica of Santa Maria del Mar is a beautiful and imposing Catholic church located in the picturesque Barcelona neighborhood of El Born. It stands as one of the best examples of Catalan Gothic architecture, with a notable difference from the European Gothic tradition. The three imposing façades emphasise its two octagonal towers, and the interior impresses visitors for its simplicity and incredible acoustics. A guided tour allows admirers to visit the first three terraces and look out onto a 360 panoramic view of the city, while for free they can observe its beauty during certain hours of the day. No trip to Barcelona would be complete without seeing this iconic church.