After building the 110-square-meter wood and steel structure for The Infinite Green, Polish artist Adam Kalinowski covered it in 3,000 plants. The green sculpture, whose shape recalls an infinity sign, contains more than 100 plant species, including perennials and succulents that bloom at different times of year. With seven levels that feature an integrated watering system, natural ventilation, and a skylight, The Infinite Green’s interior space has lower temperature and increased humidity compared to its exterior, a design that could prove useful for hot, dry climates. Created for the European Capital of Culture Wroclaw 2016 art program, The Infinite Green will be tended in Wroclaw at least until the fall of 2017.