A walk along Barcelona’s Port Vell (Old Port) provides views of the marina and a palm-treed lined walk. It’s a gorgeous setting but your kids will undoubtedly prefer to speed through the area to the aquarium. The aquarium’s themed tanks showcase the Mediterranean Sea aqua life, including stingrays, colorful fish, and sharks. For the really adventurous kids, take part in the aquarium’s diving with sharks program. All equipment is provided and for all that book a tour, two free admissions into the aquarium is provided, as well as it should be, considering the very expensive ticket price! An underwater tunnel walkway provides the most dramatic presentation, and children’s activities are offered throughout the week.