Bridget Riley, Cascando, 2015. Acrylic on APF polyester support. 150 x 450 cm.

Klaus Staudt, Tauschung (Deception), 1961. Emulsion and wood. 18 1/4 x 23 1/4 x 1 3/8 in. 

Christian Faur, Melodie #53, 2015. 2,200 hand cast encaustic crayons. 14.5 x 14.5 in.

Beatriz Milhazes, Small windows, 2014. Collage. 35 7/16 x 42 1/2 in.