A roof over the centre court at Wimbledon will be tested in front of thousands of spectators at a special exhibition event.
The roof is made of waterproof fabric and has been three years in the making.
It takes 10 minutes to close and should mean that rain delays at the championships are now a thing of the past
Time-lapse video shows the roof being built.
One-Minute World News 
Bookmark with:
What are these?
E-mail this to a friend