The Vasco da Gama Center is a large shopping mall on the east side of Lisbon. It's located near the…read morePark of Nations, the Lisbon Oceanarium, and the Orient train station. It has both regular stores and high end stores, a great food court, cinema, and plenty of room to walk around both inside and on the outside promenade. I've eaten at several of their restaurants and those are all quite good. Highly recommend.