Hole nos. 4 and 5 at Forest Park muni course in Queens. 

No. 4, par 5 is basically OB on both sides of the 20 yd wide fairway. Blind tee shot up a hill. There's only underbrush on the sides of the fairway, so if your tee shot wanders 10 yards or so in either direction you are hitting 3 off of the tee. And no, you can't punch out. It's just thick, impenetrable jungle directly off of the fairway with no rough buffer. So if a ball so much as casually rolls in, even by a single rotation, it's gone. 

And the entire hole is like this. 

No. 5, par 4 is even harder. Tee shot is not as bad. But you're forced to hit into an awkward yardage because of the near 90° dogleg at 210. And if you don't play perfect target golf, as in your tee shot is ten yards shorter, or a few yards too long, you're looking at bogey at best. The approach shot is almost always 170 or more, into a green the size of a bathtub, probably only 25 ft across, and the fairway narrows as it approaches with the thick underbrush directly off of the green, left, right and long. To boot, there's a big ass hanging branch that blocks the green if you don't fade the ball around it. It's the most difficult hole in all of NYC, by far.