Of course, it was early so we headed to the Park Güell which is a huge park (I mean it). It was so wonderful relaxing there. Musicians played their melodies and it was sunny, so it was perfect. The park has detailed architecture as well but if you would like to see the inner side (which has Gaudí pieces) you have to buy a ticket and you can enter if you go to the correct gate. We bought tickets for the next day and we were late so they didn't let us in. So be careful! If you don't have money for the inner side's ticket, it's okay because the rest of the park is free and larger.
Parc de la Ciutadella
Barcelona is full of green parks which is a must for me in a big city. One of them I visit very often, Ciutadella, because it has a wonderful fountain and a lake. But what differentiates it from all the other parks is a statue of a life-size mammoth next to the lake. Apart from clicking pictures of this huge mammoth, this park also has a zoo to visit. There are beautiful lakes and museums inside to visit too. A great place to relax and learn!