In honor of World Water Day, join us for a guided tour of one of the few accessible sections of Barcelona's sewer system. This unique opportunity allows you to observe firsthand the vital role sewers play in public hygiene, health, and wastewater management. As we navigate this underground world, we will discuss the urban water cycle and reflect on the significance of water as a precious resource. Moreover, the tour will engage participants in conversations about our collective responsibility in preserving water and ensuring its sustainability for future generations. This educational experience aims to foster a deeper understanding of urban infrastructure and environmental conservation.