The installation, which consists of a large polymer carpet (a type of plastic) that runs underwater along the 125-metre-wide Grand Canal, lets you walk in the water, in complete safety. It's a very pleasant and particularly refreshing experience, as the thousands of visitors who have been coming here since 3 June have discovered. The attraction is free and can be repeated ad infinitum. What's more, the corridor is 6 metres wide, so there's little chance of you being in the way of other walkers! Make the most of it, as this ephemeral installation will soon be disappearing.
