Now cross back over the tracks at the bridge on your left. We call it The Rusty Rainbow, but it's actually the Piety Street Arch. You can see why locals generally call it that, though.
While the other two entrances to the park allow for vehicle and handicap access, this one is very stair-heavy. The view from the top is a great way to watch the passing clouds or check out the fireworks on the many occasions New Orleans celebrates with them. I'll meet you at the bottom of the stairs on the other side.