It’s one of the last warm mornings in September. Fall is coming, I know, but today is hot and humid, and I’m going to enjoy it. I begin my walk on the High Line in the Meatpacking District near our office—Gansevoort and Washington Streets, where workers are finishing up construction on the new Whitney Museum of American Art building, scheduled to open in 2015. I ascend the “slow stairs” (called this because of the long and gradual ascent through the beams and structure) and enter the High Line at the Gansevoort Woodland, which has raised planting beds with greater soil depth for the Pennsylvania sedge and redbud trees that grow in this area—at least so says the High Line Field Guide published by Friends of the High Line.