The southern end is right by the Whitney museum. Northern end was by some Amtrac train yards I think.
You can see a full list of entrances on the High Line's website at http://bit.ly/2F8i5bl. Thanks for your interest!
Little west 12 Street west village
The starting point is located at 34th street between 12th and 11th ave. Personally I like to enter the high line here and walk south.
It begans at its ends.
High line website
34 st
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