Editing Solomon R. Guggenheim Museum (section)

==== Monitor section ====
The museum's "monitor" houses the Thannhauser Collection.<ref>{{cite web |title=Wright's Living Organism: The Evolution of the Guggenheim Museum |website=The Guggenheim Museums and Foundation |date=October 3, 2022 |url=https://www.guggenheim.org/blogs/checklist/wrights-living-organism-the-evolution-of-the-guggenheim-museum |access-date=October 3, 2022}}</ref> Its galleries surround an atrium that is circular except for a stair hall at one end of the space.<ref name=NYCLint13/> The floors are supported by columns with lozenge-shaped cross-sections.<ref name=NYCLint13 /><ref name=AR189>{{harvnb|Architectural Record|1958|ps=.|p=189}}</ref> Like the main gallery, the monitor contains a triangular service core, although its core is placed at the center of the structure.<ref name=AR189/> The monitor was originally supposed to include apartments for Rebay and Guggenheim, but this area became offices and storage space.{{sfn|Levine|1996|p=317}} In 1965, the second floor of the monitor was renovated to display some of the museum's growing permanent collection.<ref name=NPS6/>{{sfn|Ballon|2009|pp=59–61}} Part of the fourth floor was similarly converted in 1980.<ref name=NPS6/> With the restoration of the museum in the early 1990s, the second through fourth floors were converted entirely to exhibition space and renamed the Thannhauser Building.<ref name=Pfeiffer37/><ref name=NPS6/>{{sfn|Ballon|2009|pp=59–61}}