New York Laws
Article 5 - Adverse Possession
522 - Essentials of Adverse Possession Not Under Written Instrument or Judgment.

§ 522. Essentials of adverse possession not under written instrument
or judgment. For the purpose of constituting an adverse possession not
founded upon a written instrument or a judgment or decree, land is
deemed to have been possessed and occupied in either of the following
cases, and no others:

1. Where there have been acts sufficiently open to put a reasonably
diligent owner on notice.

2. Where it has been protected by a substantial enclosure, except as
provided in subdivision one of section five hundred forty-three of this
article.