Fodor's Expert Review SEA LIFE London Aquarium

The curved, colonnaded, neoclassical former County Hall that once housed London's municipal government is now home to a superb three-level aquarium where you can walk above sharks and stingrays and view more than 600 other aquatic species, both common and rare. There are also hands-on displays. It's not the biggest aquarium you've ever seen, but the educational exhibits are particularly well arranged, with themed zones devoted to a stunning coral reef, a "jellyfish experience," and rainforest aquatic life. Admission at peak periods is by 15-minute timed entry slot, but for an additional £16 you can purchase flexible priority-entry tickets that also avoid the long lines.