Artist Michael Gross flooded a London church-turned-gallery with water. The "lake" hides a system of mechanically-moving steps that enable visitors to walk on water. The installation, titled Bridge, is up until October 29 at Dilston Grove. From the gallery's description:
Each step emerges one step in front of you and disappears back underneath behind you as you go. This ‘bridge’ is purely mechanical, the weight of the person on it depresses each step a little, this force activates a submerged mechanism which raises the next step.
The public are invited to walk out on it as if walking on water, eventually reaching the middle of the lake, thirty steps and twelve meters from the shore. There they will stand alone and detached, stranded in the middle of a plane of water until they choose to return the way they came. For some people this experience of being cut off and surrounded by water will be peaceful, for others terrifying. For some walking across the water will be pure childish joy, whilst others will be too scared to try.