Joseph Beuys Tallow, 1977 Installation detail . . 29°C "This is the first sculpture that will never get cold, and if it gets cold it will never get warm again." J.B. . This work is aesthetic wizardry. If you don't believe in the power of objects then this work needs to be seen. Cast directly from a derelict architectural space in an underpass, formwork built in situ and 20 tonnes of molten fat produced to fill the moulds. It took the 3 month duration of the Münster Skulptur Projekte 1977 to cool. This was Beuys' response to 'outdoor sculpture'.