If you are looking for an usual outing during half-term, there is food for the soul and not a little fun in the cloisters of Salisbury Cathedral, where artist Bruce Munro, who lives at Kilmington near Warminster, works magic with fibre optics, glass and plastic bottles.

Inside the Cathedral is his Light Shower, hung midway between the congregation and the clergy. He creates an ethereal effect with 2,000 fibre optics ending in clear droplets of glass in a formation which echoes the vaulted the ceiling.

Breathtaking in itself, the formation is mirrored in the still, yet moving, waters of a font, half way along the aisle.

Now for the fun bit – Mr Munro’s water towers, set out in a maze through the cloisters. There are 69 towers made up of almost 15,000 bottles containing 30 tons of water and 69 km of optic fibres. There is also music and here’s the magic, the towers change colour in response to the music so you see constantly changing funnels of colour before you. There’s a ghostly, other-worldly effect as shadows of people pass between the towers, silhouetted in the light.

Viewed from the opposite cloisters they become animated stained glass.

All ages can enjoy them and there’s no rule of silence. I heard the towers compared to Daleks, fruit drops, jelly moulds – they are whatever your imagination suggests.

The towers are best seen after dark.

The bottles are made of recycled plastic and they will be recycled again, after the exhibition ends at the weekend.

They are going to a shipbuilding project in Portsmouth where a ship is being constructed entirely of second hand materials.