Acquario di Genova (Genoa Aquarium)

Set on Ponte Spinola in Genoa's restored Old Port, the Acquario di Genova is the largest aquarium in Italy and one of the biggest in Europe, part of the waterfront complex Renzo Piano designed for the 1992 Columbus celebrations. Visitors follow a one-way route through around 70 tanks holding more than 12,000 animals from some 600 species, beginning with Mediterranean and tropical reef displays before reaching the large shark tank, the bottlenose dolphin pool, the Antarctic penguins and a glass-walled Madagascar rainforest biosphere alive with reptiles, hummingbirds and free-flying butterflies. Touch pools where children can stroke rays are among the most popular stops. The full circuit typically takes two and a half to three hours, and the layout is engaging enough to absorb a half day in bad weather. The aquarium opens 365 days a year and uses dynamic, date-based pricing, so the same ticket can cost noticeably more on weekends, holidays and through the summer than on a quiet winter weekday. Crowds are heaviest from late morning through early afternoon, especially on rainy days and during Italian school holidays, when queues for the dolphin viewing area build up; the calmest experience is at opening or after about 5pm. Because the route is linear, the best way to avoid bottlenecks is to walk briskly to the far end and work backwards against the flow. The adjacent Biosfera glass sphere and the Bigo panoramic lift, both also Piano designs, make natural photo subjects from the quayside outside. The aquarium sits within easy reach of the Galata Museo del Mare and the historic centre, so it combines well with a wider day in the Porto Antico. Liguria's regional capital treats the aquarium as a flagship attraction, and combined tickets bundling it with the maritime museum and the Nazario Sauro submarine offer the best value for a full day on the waterfront.