BUILD NYC is a pop-up installation that lets New Yorkers build together with LEGOs and more. Today, we set up on a plaza at the entrance of the park so people on Amsterdam Avenue could stop and join us. Today’s event is part of our series called Pop-up West Harlem! made possible in part by West Harlem Development Corporation, which included a visit last week of EXPLORE NYC. Thanks to our host Jacob H. Schiff Playground Neighborhood Association and to Nicholas from the engineering firm WSP for volunteering today.