Two steel sculptures by Richard Serra titled Walking is Measuring, dated 1999-2000.

Richard Serra 
Walking is Measuring, 1999-2000

Weathering steel

Two slabs: 18 x 8 ft. x 5 inches (5.5 m x 2.4 m x 12.7 cm) 15 ft. 6 inches x 8 ft. x 5 inches (4.7 m x 2.4 m x 12.7 cm)

Fundação de Serralves, Porto

Photo by Peppe Avallone © 2019 Richard Serra/Artists Rights Society (ARS), New York

Two steel sculptures by Richard Serra titled Walking is Measuring, dated 1999-2000.