To go downtown, we got down into the subway at the 59th Street station and were delighted to see that the new Sol Lewitt mural has been unveiled. (We sold our Sol Lewitt last year and have always felt a bit of kinship to his work. If he were alive, I wonder how he'd feel about the carved out sections for access and infrastructure. It's an energetic and happy piece and we are glad it is there. I believe that the pairs of yellow safety treads are an unintentional harmonic.