For some of the best views in Barcelona, you have to head up Montjuïc hill. It's our city's green lung, a sprawling hilltop park where you can escape the bustle and wander through gardens, discover museums, and explore an old military fortress, the Montjuïc Castle, that watches over the port. The best way to arrive is by taking the Telefèric cable car; the ride itself is an experience, offering a stunning panorama of the entire city unfolding below you. Plan to spend at least half a day here, as there's so much to see beyond the castle, including the legacy of the 1992 Olympic Games.