In 2010, a dozen huge grass couches were installed at tourist attractions around the UK in a bizarre bid to get couch potatoes out of the house.

The sofas, some of which are 30ft long, were the idea of the National Trust and were made from a base of straw which was watered, trimmed to size, and covered in a green grass blanket.

Bosses came up with the odd idea after it was revealed that the average family spends 43 hours a week sitting on their couch, even in the summer.

Each sofa was positioned in an "outdoor living room" and took just over a month to grow.