In 2019 the municipality of Leiden, The Netherlands took the initiative to realise a new sports centre. This facility replaces an existing swimming pool and adds new activities. The goal is to reach a 100% gas-free facility, while creating a place for recreational sport activities and professional athletes.
Swimming pool and skating rink De Vliet was opened in 2023 as a result of this initiative. It houses several skating rinks (speed skating, short track, ice hockey, figure skating) and a swimming pool for water polo and short course swimming. The heat that is extracted to cool the ice rink is used to heat the swimming pool, thus realising the sustainability goals.