If the question has any room for expansion to "architecurally significant" rather than strictly "Top 100", I'd offer this:
Culver, age 13. Spent a summer lugging a vinyl bag and my aunt's Patty Bergs around, falling in love with something I could not identify -much less explain- for another 20 years.
Before those rounds, I liked to hit golf balls.
After those rounds, I liked golf.
I thank my stars for the many, many fallow/rustic/neglected years of the Culver course. It was next-to-free for me back then. Now, in all its splendor, there's about zero chance it could accidentally nurture an aimless, unconnected young lad into golferhood.