The rooftop terrace of the 1898 hotel is one of the best places to take in panoramic views of the city. The hotel itself isn't an attraction, but if you only have one day in the city, then its rooftop terrace is the best place to get a lay of the land and take in all of the sites. This large space provides for four sides of stellar city views, covering pretty much everything from Montjuic to the sea. If you're looking for an off the beaten path place from which to see the entire city, then this is your best bet.