As you move through the neighborhood, take a moment to look down at the ground. Many of the side streets, like Mercer, Wooster, and Greene Street, are still paved with what are commonly called cobblestones, though they are technically "Belgian blocks"—rectangular granite stones brought over as ship ballast and laid in the nineteenth century. Here is a practical pointer for your journey: these stones are incredibly charming, but they can be treacherous if you are wearing thin heels or have limited mobility. I highly recommend sticking to the sidewalks or wearing sturdy, comfortable shoes while you explore. If you want to see the "Queen of Cast Iron," head over to Greene Street between Canal and Sunnyside. This single stretch contains some of the most elegant examples of the style, with fire escapes and Corinthian columns that make the street feel like an open-air museum. Even with the roar of Broadway just a block away, these stone-paved corridors still hold a quiet, nineteenth-century rhythm.