Panoramic views over the Isle of Wight, a super-fast lift that makes your ears pop, and a terrifying yet brilliant glass “sky walk”—the Spinnaker Tower in Portsmouth ticks a lot of boxes for both children and adults. We headed up into the clouds to find out if Portsmouth's most famous landmark is actually worth adding to your S.E.A. goals. At a glance Postcode – Gunwharf Quays, PO1 3TT Cost – £19.50 per adult and £15.50 per child (much cheaper if you book online in advance or