Biennale Sculpture Rio de Janeiro – Guardians of Time by Manfred Kili Kielnhofer – contemporary art sculpture public arts Posted on September 17, 2015 by Manfred Kielnhofer TRIO Sculpture Biennial – Three-dimensional Intern’l Rio Biennial http://triobienal.com Guardians of Time by Manfred Kielnhofer http://kielnhofer.com