WhatSUP with Stand Up Paddle boards? This increasingly trendy form of water recreation is available in Warsaw, and we're totally on board. Based out of Port Czerniakowski, SUP Academy offers board rentals, lessons and instruction, SUP yoga sessions, sunset trips and other organised floats on the Vistula in the centre of Warsaw and further afield, plus a shop for all your new-found-hobby needs. Check online to see where they're floating today and make a reservation. Their season typically runs from mid-May to end of September, but it all depends on the lements.