The curved, colonnaded, neoclassic former County Hall that once housed London's local government administration is now home to a superb three-level aquarium full of sharks and stingrays, along with many other aquatic species, both common and rare. There are also feeding and hands-on displays, including a tank full of shellfish that you can touch. It's not the biggest aquarium you've ever seen, but the educational exhibits are particularly well arranged, with areas for
different oceans, water environments, and climate zones ranging from a stunning coral reef to a rain forest. Regular feeding times and free talks are offered throughout the day and behind-the-scenes tours are available.