Kaneohe Golf CoursesCarved from a tropical rain forest in the shadow of majestic mountains, Ko'olau Golf Club on Oahu remains one of the most difficult golf courses in the world. Losing balls in the ravines and thick jungle lining many fairways will frustrate first-timers who think they can slay one of golf's Goliaths. To enjoy the day, come for the scenery -- not a score.The First Presbyterian Church of Honolulu overcame improbable odds in 2006 to become the only church in the world to own a golf course on site: Ko'olau Golf Club. Built for $82 million, Ko'olau sits on heavenly land roughly 45 minutes from downtown Honolulu. The course was carved from a tropical rain forest designated as a nature conservancy in the shadow of the Ko'olau Mountains.