A nice hike up to the top of Montjuïc with nice views of Barcelona and the docks all along the way.
Montjuïc is the site of many attractions such a the castle on the top of the wooded hill, the Olympic Stadium and Tower, and the Palau Nacional, home of the National Art Museum of Catalunya (MNAC).
It is a short but steep hike to the top. There is also a cable car (teleférico) but it is frequently closed for repairs.
There are outlooks (miradores) on the way up with great views of the city below. The top of the castle provides 360 degree views of the entire area.