Architect Hugh Wilson traveled to Scotland to take notes on the many famous courses in the “Auld” country before mapping out the Merion layout. The third hole was inspired by North Berwick’s famous 15th hole (Redan) and No. 17, had a swale fronting the green, reminiscent of The Old Course at St. Andrews’ Valley of Sin at the 18th hole. But none of the holes are an exact replica; Wilson just incorporated those principles into his design.