During the first days of September, when the moon is young, on the Promenade near the Kupa River, a natural gathering venue of citizens of Sisak and their guests, the ′Celtic Night′ happens. All along the left bank of the Kupa, on which the town centre abuts, between two bridges of Sisak, thousands of people get together to proudly revise a great history lesson in the open, on the river which has always meant life for the town of Sisak.
In the glow of spotlights, walking with heroes, athletes, and leaders, with rich cultural and gastronomic offer, with playful laugh of a happy child..., with magic potion served to us along the bank on the Promenade by druids and sorceresses, there are pictures on floats emerging, connected with flowing candles, accompanied by music and a voice which clarifies, reminds and revives all that what is property and heritage of us all, each of the pictures being related to a great historical event, each with its story and its hero. Characters from books and legends, in their costumes and very special, precious possession of memory of the town of Sisak, in the light of the candles tell the ′Celtic Night′, that, what we are going to leave to the coming generations: glorious history of the town which has broken invaders, opposed the powerful but also has left a lasting memorial in the history of the Croatian people.
The ′Celtic Night′ ends in celebration. When the floats flow away, when the music turns down, when enchanted sighs stop, when the Kupa carries away clapping and cheering with glittering of the last candle blaze, when the feelings are at their height and when we do not succeed to tell each other how much we are aware of our worthiness and pride of our town... then, in a magnificent moment, the sky above the unbreakably tied town and river bursts into flames of colours and blast. The end of the ′Celtic Night′, but also the announcement of celebrating till late at night, is marked by the final effect: great, wonderful, Sisak fireworks!