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

ยง 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.