The Museu Nacional do Azulejo, or the National Tile Museum, is a unique museum dedicated to the art of Portuguese tiles. Housed in the beautiful Madre de Deus Convent, the museum displays a vast collection of decorative tiles dating back to the 15th century. Visitors can admire the intricate designs and vibrant colors of the tiles, which depict various historical, religious, and cultural themes. With free admission on Sundays and public holidays until 2 pm, it is a fantastic opportunity to appreciate the beauty and craftsmanship of Portuguese tilework.