I always prefer to contribute to positive threads, but this question came into my mind when I played golf last weekend at a really nice new resort course in Christchurch called Pegasus Resort – which had just finished hosting the NZ Women's Open.
The 18th hole was, by some considerable distance, the worst hole on the course. The visuals from the tee were poor, the second shot had little interest and the approach shot to a green that sloped away from the line of play was only made worse by the lake that backed onto it. It was a very poor finish to a round that was otherwise full of interest.
So a few contenders are;
Pegasus, Christchurch, NZ
Cape Kidnappers, NZ (would be a much better hole if the green was up on the left, and the punchbowl was the catchment area IMHO)
Jack's Point, NZ (Bunkers along the lake push you to where you want to be to attached the green anyway. Confused strategy IMHO)
Kingsbarns, Scotland (No where to lay-up, and into certain winds players can't hit it over the crest to see the green. Poor finish to a great course)
I was interested to read somewhere a while ago that Pete Dye thought the idea finish to a tournament was short par 5, difficult par 3, long hazardous par 4 for the 16th, 17th, and 18th holes. Perhaps he perfected this formula at TPC Sawgrass and generally kept to from there forth.