The Noho Historic District is one of the most charming in Manhattan, with quaint cobblestone streets and an eclectic mix of historic lofts that once housed the city’s dry goods centers and early-19th-century houses. And one of these quirky buildings is 3 Great Jones Street. The Greek Revival townhouse was erected in 1845, replacing a former stable building. It saw façade alterations in the 1920s, but the entryway to unit R1 still retains all of its old-time appeal, as it’s situated on the side of the building on Jones Alley (formerly known as Shinbone Alley), a private, gated mews. A 14-foot, historic wooden door surrounded by welcoming plants leads to the duplex loft, on the market for $3.7 million.