Ryan Tracey and Darren Mortiboy have been building balloon sculptures for television shows and large events for a number of years. Ryan is the fastest balloon modeller in the world and Darren is recognised within the industry as one of the greatest balloon sculptors in the world. On Blue Peter they built a 20 ft hot air balloon mega sculpture out of balloons. Last year Ryan and Darren built a 14ft Balloon Astronaut with over 300 modelling balloons. This year they are going bigger and better - but what will it be?? Come along and watch this mega sculpture being built - it will be out of this world! The build is happening in Foyleside Shopping Centre and will begin on Tuesday 12th February from 09:00am.