50 years after Eero Saarinen’s landmark was dedicated, it has a new museum, a new promenade connecting it to the city, and a new concept. “The arch … has always been beloved because it binds together two feel-good ideas that are essential to American identity: a heroic past of grit and conquest, and a triumphant future of innovation. Now, well into the 21st century, the challenge is how to disentangle and even dismantle those ideas while salvaging the arch as a cultural object. The solution, mostly effective, has been to think in terms of connection, both to the city which hosts it, and to the deeper currents of history that led to its creation.”