The upgraded Windmill 3.0 air conditioner offers the same sleek look and sustainable design with new WhisperTech technology.

"It's really a museum piece, 122 years old." VIDEO: Check out Salinas' huge historic windmill McKinnon was inspired to build an unusual double-header design that featured two 30-foot wind wheels.

ACCOMPANYING this note are two windmill illustrations (Figs. 1 and 2), one from Ramelli's “Le diverse et artificiose Machine”, 1588 (Brit. Mus., 48, f. 15), and the other from the great ...