Atlanta house donated in 1926 is now a 300,000-square-foot museum

A residence in Atlanta that was donated a century ago has since been transformed into a museum spanning roughly 300,000 square feet. The building's evolution from a private home to a large public institution marks a notable centennial milestone. Because the source article text was not included, further details such as the donor, the museum's name, and its specific opening date could not be verified. The summary is therefore limited to the facts conveyed by the original headline.