From the club website:
Legendary golf architect Donald Ross displayed his creative genius when he designed the golf course, positioned on the Onondaga escarpment, running around and through a limestone quarry. Six of the holes – 5, 6, 7, 11, 12 and 13 – incorporate the unique beauty of the limestone. Holes 13, 17 and 18 are on the lower level below the escarpment.
This arrangement actually provides the Country Club of Buffalo with two signature holes – the sixth, a par three located in the midst of an old quarry that in years past provided stone for many construction projects, and the 18th, which sits below a massive natural rock garden, with beautiful plantings leading up to the clubhouse.
The 1926 Donald Ross design has been preserved, while improvements were made by such notables as Robert Trent Jones in 1952-54, Geoffrey St. John Cornish in 1965 and 1983, and William Craig Schreiner in 1994-96. The course was first honored by Golfweek Magazine in 2004. The publication included the Country Club of Buffalo in the list of the Top 100 Classic Golf Courses in America (courses constructed before 1960).