CREDIT : CARLORATTIASSOCIATI . COM

WHO BUILT IT : SCHNEIDER ELECTRIC , RAMBOLL , DANFOSS LEANHEAT LOCATION : FINLAND

Created by Italy-based design firm Carlo Ratti Association , Hot Heart consists of ten cylindrical basins that form a floating , archipelago-like structure situated off the coast of the metropolis .

Looking like something out of a futuristic Hollywood blockbuster , its basins act as giant thermal batteries , and use an AI-fuelled system to synchronise energy production and consumption . Its 10 cylindrical basins each measure 225 metres in diameter and collectively hold up to 10m cubic metres of water . Its dual function of providing thermal energy storage is balanced with its role as a hub for recreational activities . Hot Heart won the Helsinki Energy Challenge , which aims to decarbonise the heating system of the Finnish capital by 2030 .

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