Visitors explore Robert Irwin's Scrim Veil--Black Rectangle--Natural Light during its 2013 reprise at the Whitney Museum of American Art. ©Robert Irwin/Photography ©2013 Philipp Scholz Rittermann/Courtesy of the Whitney Museum hide caption

itoggle caption ©Robert Irwin/Photography ©2013 Philipp Scholz Rittermann/Courtesy of the Whitney Museum

Artwork from Roth's solo exhibition "Welcome to Detroit," on display at Eastern Michigan University in 2012. Evan Roth hide caption

itoggle caption Evan Roth

An American soldier reads a letter from home, while taking a break from repairing a tank tread in Lang Vei, Vietnam, in March 1971. David Burnett/Contact Press Images hide caption

itoggle caption David Burnett/Contact Press Images

This "Die-O-Rama" features a picnic lunch of body parts. Marty Walsh/Courtesy of Trifecta Gallery hide caption

itoggle caption Marty Walsh/Courtesy of Trifecta Gallery

Amazon said its new art marketplace will provide access to more than 40,000 works of art from at least 150 galleries and dealers. Amazon.com hide caption

itoggle caption Amazon.com

The Angolan exhibit consists of tall stacks of large photographic posters by artist Edson Chagas. The country, which is exhibiting at Venice for the first time, won the Golden Lion award for best national pavilion. Courtesy of www.beyondentrophy.com hide caption

itoggle caption Courtesy of www.beyondentrophy.com

Sartorial Anarchy #5, 2012. Ike Ude, photographer. In his Sartorial Anarchy self-portraits, New York-based Nigerian-born artist Ike Ude creates composite images of the dandy across geography and chronology. Ude photographs himself in disparate ensembles, pairing, for example, a copy of an 18th-century Macaroni wig with other carefully selected vintage garments and reproductions. Courtesy of Leila Heller Gallery Ike Ude hide caption

itoggle caption Courtesy of Leila Heller Gallery Ike Ude