Couldn't find the article, but it was written by Steve Groh, a sometimes poster here. Don't remember them all, but Kiowa Creek in Bennett, CO has one of the tallest in the US - I think he gave its height as 150 ft., and Great Guns in Nunn, CO has one just slightly shorter. They make up for the difference in height by placing it on a knoll, so the stations are down a hill. Both are great courses.