The fountain opened on 4 September 2011, drawing tens of thousands of people to the newly rebuilt quay along the Southern Buh near Vinnytsia's Roshen confectionery factory. It was part of an ambitious reconstruction: a 700-meter waterfront was embanked, a pedestrian promenade and leisure area laid out, and an amphitheater built so spectators could sit and watch. The scale of the machinery is hard to picture until you see the numbers. The central jet reaches more than sixty meters, the water spreads roughly 140 meters across its front, and the projection screen conjured from spray measures about 16 by 45 meters. Ranked the top attraction in the city, it quickly became Vinnytsia's signature sight, the reason a mid-sized Ukrainian city draws visitors after dark.

The design came from Emotion Media Factory, a German company whose dancing fountains and multimedia shows have appeared as far afield as a night safari park in Chiang Mai, Thailand, a resort in South Korea, and the decks of AIDA cruise ships. The show itself was created by the company's chief executive, Ralph Douw. What sets the Roshen fountain apart from most of its cousins is that it does not recycle water through a tidy artificial basin. It draws directly from the living river, which is part of why the whole platform must be built to float, sink, and survive a Ukrainian winter submerged. The project cost around 37 million hryvnia, roughly 1.5 million euros at the time, and it went on to be named the country's best building and construction of 2012.

The performances weave together water, music, lasers, and 3D projection thrown onto the shimmering screen of mist. One centerpiece is a fantasy reinterpretation of Tchaikovsky's Swan Lake, an elaborate production driven by hundreds of jets, dozens of pumps, and a battery of underwater LED floodlights, choreographed to music with laser light dancing on, through, and above the water. In 2016 a new show joined the repertoire, based on Antoine de Saint-Exupéry's beloved tale The Little Prince, telling of the boy, his encounter with the fox, and the baobab trees threatening to overrun his tiny home asteroid. Over the years the grand seasonal openings became civic events in their own right, headlined by some of Ukraine's most popular musicians and drawing crowds well over twenty thousand strong.

There is something poetic in a landmark that spends half the year hidden. The floating platform is a serious piece of naval engineering, running close to a hundred meters long and displacing on the order of 170 tons, yet it is designed to disappear entirely when the shows are done. That seasonal rhythm gives the fountain a life that most monuments lack. It arrives with the spring warmth, performs through the long light evenings of a Ukrainian summer, and slips back beneath the water as autumn closes in. For the people of Vinnytsia, the first jet of a new season on the Southern Buh is a small annual promise kept, a signal that the warm nights on the quay have returned.