![Visitors observe eight massive steel sculptures by U.S. artist Richard Serra during a special preview at the Guggenheim museum in Bilbao, northern Spain June 3, 2005. The installation "The Matter of Time", Visitors observe eight massive steel sculptures by U.S. artist Richard Serra during a special preview at the Guggenheim museum in Bilbao, northern Spain June 3, 2005. The installation "The Matter of Time",](https://c8.alamy.com/comp/2D3YCF0/visitors-observe-eight-massive-steel-sculptures-by-us-artist-richard-serra-during-a-special-preview-at-the-guggenheim-museum-in-bilbao-northern-spain-june-3-2005-the-installation-the-matter-of-time-based-on-serras-theories-of-torqued-ellipses-opens-to-the-public-on-june-8-and-will-be-a-permanent-feature-of-the-museum-2D3YCF0.jpg)
Visitors observe eight massive steel sculptures by U.S. artist Richard Serra during a special preview at the Guggenheim museum in Bilbao, northern Spain June 3, 2005. The installation "The Matter of Time",
![Richard Serra, The Matter of Time, Guggenheim Museum, Bilbao, Bizkaia, Basque Country, Spain, Europe Stock Photo - Alamy Richard Serra, The Matter of Time, Guggenheim Museum, Bilbao, Bizkaia, Basque Country, Spain, Europe Stock Photo - Alamy](https://c8.alamy.com/comp/RKED2A/richard-serra-the-matter-of-time-guggenheim-museum-bilbao-bizkaia-basque-country-spain-europe-RKED2A.jpg)
Richard Serra, The Matter of Time, Guggenheim Museum, Bilbao, Bizkaia, Basque Country, Spain, Europe Stock Photo - Alamy
![The Matter of Time - Richard Serra - Guggenheim Museum Bilbao | Bilbao, Guggenheim museum bilbao, Serra The Matter of Time - Richard Serra - Guggenheim Museum Bilbao | Bilbao, Guggenheim museum bilbao, Serra](https://i.pinimg.com/736x/d0/3f/b9/d03fb968a483d5225627e31129082a25--richard-serra-bilbao.jpg)