Whistling Straits - Straits Course sits on a narrow strip of land between Lake Michigan and a low ridge in eastern Wisconsin. The course was built on former industrial land, with soil and grasses trucked in to create its links-style profile. Fairways follow the natural contours of the lakeshore, rising and falling over low dunes that were shaped by bulldozers rather than wind. Deep bunkers are cut into the slopes, their sand faces often steeper on the side facing the prevailing wind. The greens are built to USGA standards but are smaller than typical resort courses, with subtle internal contours that reward precise approach shots. Native fescue and fine bentgrass are the dominant turf species, and the rough is maintained at varying heights to penalize shots that miss the fairway by different margins. A public road crosses the property twice, separating several holes into distinct sections that each face the water from a different angle. Irrigation is drawn from Lake Michigan, and drainage channels run beneath several fairways to handle the heavy lake-effect rainfall.