Aveiro is small, but it offers a trove of fun activities to do. This picturesque town was built next to the ria de Aveiro, a saltwater lagoon that provides seaweed, salt and bountiful fish. In the past, colorful ‘molicero’ boats were used to harvest seaweed, but today they are used to take tourists on peaceful boat rides. For lunch, why don’t you try a ‘caldeirada de enguias’ (eel stew) or some 'ovos moles’ (a pastry made with egg yolks and sugar)? There are also many wineries in the city, so you can pair your food with a glass of Bairrada wine. Aveiro is one of the best day trips from Porto, but tourists who stay in the city will be able to walk the scenic footpath along the southern side of the lagoon. With more time, travelers can also explore the idyllic beaches of Costa Nova, or the untouched Sao Jacinto Dunes Natural Reserve.