The rampart of Baluarte Sant Pere is situated right next to the lovely square of Plaza del Sol, which boasts a good restaurant of the same name and some nice little bars. You can access the Plaza via a tunnel from Parque Reina Sofía. Alternatively, use the main ramp at 'Portal de ses Taules', which ascends into old town Dalt Vila. Go to the right and follow the narrow roads upwards until you have reached the rampart, which sits on the corner of the city wall.