Here’s some info about the gardens that I found on http://gardenmontessori.org
Arthur Savage, an immigrant from Leamington Spa, England, built the house and garden during World War I. Savage was president of the Ty-Sa-Man company, located in what is now World’s Fair Park.
Savage loved rock gardens, and established several in East Tennessee. The garden was inspired by Japanese garden designs, which had become popular through the early 20th century Art Nouveau movement. Work on the garden began in 1917, and was completed sometime during the following decade.