4. Washington Square Park
Moore lives in a townhouse with his grandmother just off Washington Square Park. In the book, the address is 19 Washington Square North. This suggests that Moore is of the old money crowd, as the new money robber barons like the Vanderbilts were building their mansions further uptown where they could buy up property.
Though this exact spot, with a backdrop of the Stanford White designed Washington Square Park Arch, is now a multi-story apartment building, this area would have been lined with townhouses like you see on the southern edge of Washington Square Park. 19 Washington Square North is still a brick townhouse however. In this scene, Sarah shows up at Moore’s house hoping he will accompany her to visit the Santorelli’s on the Lower East Side.