Step 1 : Introduction to the question "In which city was the first 18-hole golf course in the United States built?"
...The Chicago Golf Club is the oldest 18-hole course in the United States. The course was originally only nine holes, but it was increased to 18 in 1893. All 18 holes, sadly, are no longer accessible. The Chicago Golf Club is now known as Downers Grove Golf Club, and only 9 of the 18 holes are operated. Although some minor changes were made to the course over the years, holes 2, 4, 7, 8, and 9 still maintain their original design integrity. Chicago Golf Club is ranked the fifth-most exclusive in the world. There are only 120 members and it will never exceed this amount, the only way to get in is by invitation from a member.