I came across Anna Schuleit's work on Charlie Rose a few years ago. He interviewed Anna about receiving the MacArthur Fellowship and she discussed her project "Bloom" which I found endlessly inspirational and fascinating.
"In 2003, Schuleit created an even more ambitious work at another shuttered hospital, the Massachusetts Mental Health Center in Boston. For "Bloom," Schuleit turned the facility into a vast, meandering Impressionist canvas by carpeting the floors with 28,000 tulips, heathers, and African violets. Why flowers? Schuleit researched the number of patients at the facility over the years and calculated how many flowers they would have received -- if people sent flowers to the institutionalized." -Boston Globe
Charlie Rose Interview