Piriquita Café
1/18 Rua das Padarias, Sintra
Not exactly a well-kept secret, this wonderful bakery was founded in Sintra in 1862, and has been known for its pastries ever since. Come for the queijadas, small, crispy pies filled with cheese, sugar, and a little cinnamon, and travesseiros, the famous pillow-like cake (made with egg cream, almond, and other amazing stuff) that was invented here.