Belem District is a laid back area of Lisbon, known for its seafood restaurants and houses decorated with colorful tiles. Among the areas shaded green lawns are historic landmarks that recall Portugals seafaring past, like 16th century Tower of Belem and the sail shaped Discoveries Monument. near the vast gothic Jeronimos monastery, the popular Pasteis de Belem, is famed for its custard tarts, or pastel de nata.