N.Y.C. Admin. Code § 10-167: § 10-167 Climbing, jumping or suspending of oneself from structures prohibited.

a. For purposes of this section, the term "structure" shall mean any building, monument, statue, crane, bridge, sign, tower or other object, or any combination thereof, exceeding fifty feet in height.

b. It shall be unlawful to:

(i) jump or attempt to jump from a structure, or

(ii) climb or attempt to climb up, down or around the exterior of a structure, or suspend or attempt to suspend oneself from the exterior of a structure or on a device attached to one or more structures, unless permission has been granted to climb or suspend oneself from the structure by the owner of the structure for the sole purpose of performing construction or maintenance.

c. This section shall not apply to a structure the primary purpose of which is recreational or instructional climbing or jumping, provided that permission is granted for such activity by the owner of such structure.

d. Any person who violates the provisions of subdivision b of this section shall be guilty of a class A misdemeanor, punishable by up to one year in jail or a fine of up to one thousand dollars or both.