Outsider artist, sophisticated na f, and witch are all labels that have described Mary Nohl (1914-2001), creator of a magical and mysterious site on the shore of Lake Michigan near Milwaukee, Wisconsin. Here she constructed huge concrete heads, stone-encrusted creatures, and imposing driftwood figures to fill the yard surrounding a modest cottage where she spent most of her life. Carved heads hang from the eaves, wind chimes tinkle in the trees, and...