The plan also called for 155 orthogonal cross streets. The location of the cross streets was fixed at the boundaries of parcels into which the land had previously been divided. The basepoint for the cross streets was First Street: this was a short and inconspicuous street, which still exists, and originally ran from the intersection of Avenue B and Houston Street to the intersection of the Bowery and Bleecker Street. Peretz Square, a small, narrow triangular park bounded by Houston Street, 1st Street, and First Avenue, is the grid's cornerstone.