Pablo Gargallo (1881–1934) was an Aragonese sculptor who worked in Paris alongside Picasso and became one of the pioneers of modern sculpture in iron and bronze. His museum occupies the early 17th-century Palacio de Argillo in Zaragoza's old town — a handsome building with a fine Renaissance courtyard that suits the collection well.
Gargallo's best-known works are his openwork metal sculptures, in which negative space becomes as important as the material itself: faces and figures that are as much absence as presence. His Harlequin (1927) and Great Prophet (1933) are both here. The museum is often quiet and admission is free. Worth combining with a visit to the nearby Museo Camón Aznar.