Canal boats are equipped with some handle, wrench thing that you need to attach to these bridges to wind them up in order for the boat to go through. Then lower the bridge again for use by local traffic. Quite funny to watch
This was cool. Cog and lever system trains that take you up to the summit of the Snowdonia Mountains. Unfortunately due to high (and freakin cold) winds, the train made it 5/8ths of the way.