The subject of the competition is an artwork to signal the entrance to the Waltrovka complex. It should consider the demands for art in the public exterior space of the new office complex being built on a neglected brownfield site in Prague 5. The artwork should be realized in situ by the end of April 2024.

The exterior artwork should be robust and durable to the point of being "unbreakable." It should contain a water element. Optimally, particularly as the commissioning body will service it, the artwork should contain as few electronic elements as possible.