Located in Port Vell, L’Aquarium de Barcelona is a magical place where you can take your child to see more than 11 000 fish and sea creatures in 35 themed tanks representing underwater caves, tidal areas, tropical reefs and the oceans. The most spectacular of all this, however, is the immense Oceanarium, the only one in Europe. A transparent 80-meter-long tunnel runs through the Oceanarium where you can walk among sharks, gilt heads, morays, ocean sunfish and many more species.