The Big Dip kicks off in Manchester and London this weekend and promises to bring all the fun of the seaside right to the heart of these two awesome cities for the next month. In both cities, come rain or shine, a 25 metre outdoor pool and sandy beach are being built especially for the occasion. Think sandcastles, swimming, face painting, slides, deckchairs, picnics, basketball and ice cream. Adult tickets are £3 and kids get in free. There are even free swimming lessons! See you in the queue for face painting.