The Johnny Sack Cabin, at Big Springs, Idaho near Island Park, is a log bungalow built in 1932–34. It was listed on the National Register of Historic Places in 1979. It is a very well-made bungalow, about 20 by 27 feet in plan, with porches as extensions. It was built by German immigrant carpenter Johnny Sack, but its design seems from then-modern bungalow style, rather than from German origins.