BEST INFRASTRUCTURE PROJECT - CYCLING THROUGH THE TREES BY VISIT LIMBURGH: Winding through the treetops of a Belgian forest is this 700m (2,296ft) long 'tight double-circle' cycle path. Dezeen said: 'The columns of the bicycle bridge in corten steel are alternately placed one, two and three metres (nine ft) apart and symbolise the straight trunks of the pine trees. This ensures that the construction blends nicely into the environment'