The 1.5-acre gated property was once part of the Lookout Mountain Air Force Station, which turned out classified films and photos of nuclear tests after World War II. The secret facility received top military officials and even U.S. presidents during its active years.
Today, some 50,000 square feet of eclectic space includes studios, a sound stage, art galleries, a theater, eight bedrooms and 12 bathrooms. The wide-ranging interior space features tile, paver and concrete floors, sloped ceilings, arched windows and ceiling beams.
A swimming pool, a courtyard and a large motor court also are on the fortress-like grounds.
The property last sold two decades ago for $750,000.
Leto, 43, won an Oscar for his supporting role in "Dallas Buyers Club" (2013). His other film work includes "Mr. Nobody" (2009), "Lord of War" (2005) and "Requiem for a Dream" (2000). He was in the mid-1990s drama "My So-Called Life."
He is also a vocalist, song writer and instrumentalist for the band 30 Seconds to Mars.
Real Estalker at Variety broke the news of the sale.
Brett Lawyer of Hilton & Hyland was the listing agent. The transaction was completed off-market.