Barcelona is a beautiful city with plenty of things to see. Gaudí´s buildings and monuments, the beaches, the parks and the streets are unique in the world.
To see Barcelona, there´s nothing better than using the Hop On Hop Off Tourist Bus. Its three routes, the red, the blue (the two main important ones) and the green one see the whole city and all the interest sites, and we can get on and off the bus as we please because there are buses every few minutes so we can visit the places at our pace without worrying about the bus leaving. The buses are open-top ones, which means we can enjoy the great weather as we see the whole city. On the bus they give us a map with all the stops so we can get on the bus on any of them, since there´s no established beginning or end of the route.
Also, the bus has an audio guide in 10 different languages as well as an informative guide on board that tells us what we are seeing as well as announcing the next stop, so we´re not lost. You can buy day tickets (24€ for an adult and 14€ for children over 4) and two-day ticket, the latter with a big discount, and with them visit the city for the whole day (or two!) on its three routes.
If you want to see this beautiful city, rent apartments in Barcelona and use the Barcelona Hop On Hop Off Tourist Bus to visit the whole city, it´s the best way to do it so you don´t miss a single thing.