If you did indulge in that chocolate cake and feel the need to double up on exercise and tourist attractions, head over to Castelo de São Jorge. The walk over is quite a feat in and of itself. This Moorish castle towers over the city center of Lisbon and offers beautiful views before you even cross the drawbridge. It should be noted that current day, Castelo de S. Jorge is more beautiful ruins and castle walls than an actual castle as it’s historical purpose was to house military troops and the elite in case of attack, rather than a fucntion as residence. Take a stroll around the castle walls, climb up the towers, and walk alongside the countless peacocks as you gaze over the sweeping city views.