Évora Cathedral is Portugal's largest medieval cathedral, built between 1186-1204 in Romanesque-Gothic style. It features two asymmetrical conical towers and a fortress-like facade that reflects its Reconquista-era origins. In 1497, the cathedral blessed Vasco da Gama's ship flags before his historic voyage to India. The interior houses a stunning baroque main chapel and an 18th-century organ. Don't miss climbing to the rooftop via the bell tower's 135 spiral steps for a breathtaking 360-degree panoramic view of the city and surrounding Alentejo plains. The attached museum displays rare religious art and medieval treasures.