Georgia O’Keeffe's Home & Studio exists in many ways as she left it and takes public visitors in Abiquiú, New Mexico

https://www.okeeffemuseum.org/

Eduardo Paolozzi (1924-2005) had part of his studio recreated in the modern art Gallery in Edinburgh.

* https://www.nationalgalleries.org/exhibition/paolozzi-studio

Margaret Olley (1923-2011) had part of her studio recreated in the Tweed Regional Gallery and Margaret Olley Art Centre, Murwillumbah.

* https://gallery.tweed.nsw.gov.au/visit/margaret-olley-art-ce...

Dame Barbara Hepworth (1903-1975) has most of her studio converted to a museum but with works in progress in plaster and stone workshops left as-is in situ at the Barbara Hepworth Museum in St Ives, Cornwall.

* https://wearecornwall.com/listings/barbara-hepworth-museum-a...

From memory they share one thing: They're pretty messy. Margaret Olley's is maybe the worst, she kept still life tableaux for decades, painted them many times. It's nice to see the work reflected on the wall and see the still life as-is.

Clifton Pugh's Dunmoochin (original) is part of national heritage now, and still used as an artists retreat as part of the Dunmoochin Foundation in outer Melbourne.

  Dunmoochin is historically significant as the home and studio of the internationally famous artist, Clifton Pugh, three times Archibald Prize winner and founder of the Dunmoochin Artist's Community. The property exemplifies the values and robust way of life of the artistic community that settled in this area in the 1950s. 

* https://vhd.heritagecouncil.vic.gov.au/places/55217

* https://dunmoochin.org/

* https://en.wikipedia.org/wiki/Clifton_Pugh

Albert Namatjira's "studio" was the entirety of the MacDonnell Ranges in Central Australia .. that's still there much as he saw it last, albeit more encroached by white ants.

* https://en.wikipedia.org/wiki/Albert_Namatjira#/media/File:W...

* https://en.wikipedia.org/wiki/Albert_Namatjira