There's an irony in Merion hosting this year's U.S. Open: Many believed the Open would never return to Merion because, by today's standards, it's a short course. Less than 7,000 yards. Why is that ironic? Because one of the motivations for building Merion's East Course back in the early 20th century was a change in golf ball technology - the Haskell ball replaced gutties - that made Merion's original layout too short.
So they built Merion East, and the rest is history - lots of golf history, lots of championships.
Check out our profile of Merion Golf Club to read up on the club's origins, its golf courses and champions, and more about its history and trivia.
Or check out the Merion photo gallery for a glimpse of the golf course, including the Bobby Jones plaque and the Ben Hogan plaque.