Parc de Montjuïc spans an ancient hill overlooking the southern edge of the port of Barcelona. It is the city’s largest public space and is filled with more than a day’s worth of sites to see and explore. Yet, like Barcelona’s very own Xanadu, it also provides a scenic and serene escape from the hustle and bustle of urban life. Your visit to Montjuïc should start with an adventure on the Telefèric del Port – an aerial tramway that dangles…