ART21 is an award-winning series of 24 DVDs in which 100 contemporary artists talk about their creations, the way they work and their individual view of art. Ai Weiwei, Jeff Koons, Cindy Sherman, Richard Serra, Bruce Nauman, Jenny Holzer and many others open up their studios and share with us their approach to creating a work of art. The series offers insights into the entire spectrum of contemporary visual art forms from sculptures, installations and conceptual art to photography and painting. How do we organize life? What are the ways in which we capture knowledge and attempt greater understanding? The ''Art in the Twenty-First Century'' documentary “Structures” explores these questions in the work of the artists Roni Horn, Matthew Ritchie, Fred Wilson, and Richard Tuttle, and concludes with an original video artwork by Teresa Hubbard and Alexander Birchler.