The environmental and climate protection organisation Blue Demonstration wants to send a sustainable message across Germany with its interactive artwork ‘Blue17Circles Germany’. At the centre of the artwork is a blue shoe, symbolising conscious management of our carbon footprint. Schools in 17 cities across Germany are collecting old shoes, painting them blue and then installing them on Earth Day 2026 to form a large, circular letter in the centre of their city.

Berlin – Hamburg – Kiel – Bremen – Hanover – Dortmund – Düsseldorf – Cologne –
Leipzig – Kassel – Dresden – Frankfurt – Mannheim – Heidelberg – Stuttgart – Karlsruhe – Nuremberg – Munich

In 17 major cities across Germany, a special web address will be created at the same time – composed of 17 identical letters.  ooooooooooooooooo.de
This will make it a unique work of art for environmental and climate protection: 
Because in order to be able to read the address at all, we have to change our way of thinking – just as is urgently needed now in environmental and climate protection.