The hilly heart of Lisbon lends itself to walking, so you can explore much of the center on foot (if you’re wearing decent shoes). The cobblestones can be slippery when it rains though, so forego the high heels for something comfortable and grippy. If you want to venture farther afield, public transport is cheap and easy. The metro runs directly from the airport to most surrounding neighborhoods. If you can, avoid the morning rush hour! For those looking to visit Sintra by train, get to the platform early in order to get a seat and watch out for pickpockets at the touristy stations, as well as in Barrio Alto.