Here we do not promise strong sensations, but the opportunity to make a short journey through cities with a strong relationship with water. We treat water as an element that coexists with the urban space. That is why we propose a journey along different cities that have some kind of relationship with water. It is a question of studying and analysing the urban structure established between the urban ground and the space of water, that of a river, a canal, a lake or the sea. The project claims to be a metaphor for urban complexity; therefore it proposes a pavilion that lacks continuous walls and an unfinished ceiling. The concatenation of spaces is surprising: in one of the rooms, five of the metallic trees support discs with photographs of cities and in another twenty stalactites hang and four stalagmites emerge emitting images in a permanent way. The interior journey ends in a space of Zaragoza, completely dark, overhung by a large terracotta vessel that tells the history of the city. Openings allow a view of the Ebro, the Pavilion Bridge and the Basilica of the Pillar.