This sprawling neighborhood isn't so much easily defined by a single persona as it is by its relative preponderance of green land. Between Fresh Pond Reservation (a 155-acre kettle hole lake surrounded by 162 acres of land and a nine-hole golf course), the meditative Charles River Reservation, and bird-watchers' paradise Mount Auburn Cemetery, there's plenty of room to roam. A primarily affluent population dwells among Huron Village (hint: Cambridge resident and chef célèbre Julia Child used to shop here), with quiet luxury lurking in the flower shop, the sandwicherie, the housewares retailer, the mid-century furniture dealer.Not to mention oodles of baby- and puppy-watching, if that's your thing.