Peter Barlow was enjoying his stag do in the Joinery, Leanne Barlow was at her hen do in the Rovers, Molly Dobbs was preparing to leave husband Tyrone and John Stape was arguing with Charlotte Hoyle, when disaster struck the Street.
An explosion ripped through the Joinery causing a tram to career off the viaduct and crash first into the corner Shop and then the Kabin. As parts of Coronation Street collapsed, lives were lost and people were seriously injured.
For some families life would never be the same again.
Go behind the scenes of the celebratory storyline in pictures and videos below