As you climb out from the subway, head East on 41st Street in front of the Library to Park Avenue and look down. There are a series of plaques in the sidewalk called Library Walk by Gregg LeFevre. If you continue on Park Avenue towards 40th Street, you will notice additional sidewalk medallions. Here Gregg LeFevre has commemorated some of the former designed by the tenants of 101 Park Avenue which used to be known as the Architects Building.