There were fun fair rides, amusements, a petting farm, arts and crafts, cultural workshops and much more.
Here is a selection of photographs.
1. George McGowan and some of his staff from the Old Library Trust, assisting Colm Barton at the Wan Big Party in Creggan on Tuesday.
George McGowan and some of his staff from the Old Library Trust, assisting Colm Barton at the Wan Big Party in Creggan on Tuesday. Photo: Jim McCafferty
2. The Mayor, Patricia Logue pictured with husband James and two years-old grandson Senan at the Wan Big Party in Creggan on Tuesday afternoon.
The Mayor, Patricia Logue pictured with husband James and two years-old grandson Senan at the Wan Big Party in Creggan on Tuesday afternoon. Photo: Jim McCafferty
3. Seven years old Olivia Mattreus doesn't let the darkening skies bother her as she bounces for job at the Féile 23s Wan Big Party in Creggan on Tuesday. (Photos: Jim McCafferty Photography)
Seven years old Olivia Mattreus doesn't let the darkening skies bother her as she bounces for job at the Féile 23s Wan Big Party in Creggan on Tuesday. (Photos: Jim McCafferty Photography) Photo: Jim McCafferty
4. What a smile! from this young lady up at the Wan Big Party in Creggan on Tuesday. (Photos: Jim McCafferty Photography)
What a smile! from this young lady up at the Wan Big Party in Creggan on Tuesday. (Photos: Jim McCafferty Photography) Photo: Jim McCafferty