The Sir Norman Foster–designed National Sea Life Centre is England's largest inland aquarium. Its tanks teem with exotic marine life including razor-jawed hammerhead sharks, turtles and otters. Prepurchase tickets online for fast-track entry and get discounts of up to 40% off walk-in rates. Book online too for 15-minute behind-the-scenes tours (£1.50) offering access to otherwise out-of-bounds areas, and for one-hour feeding tours (£65 to £105; minimum age 12), feeding turtles, penguins or (if you're game) sharks.