Start spreading the news—you no longer have to be over 21 to sample Manhattan sophistication. Begin at Citibabes (52 Mercer St.; 800/697-0107; www.citibabes.com), a lavish private club for families where you can have a "detox pedicure" while your kids learn Broadway tunes. (Guests at the Soho Grand and other hotels can nab a coveted one-week membership for $250.) Afterward, cab it to the Carlyle Hotel (35 E. 76th St.; 800/227-5737; www.thecarlyle.com) for a Madeline-themed tea party under 1947 Ludwig Bemelmans murals. For more-adult drinks, try Appellation Wine & Spirits (156 10th Ave.; 212/741-9474; www.appellationnyc.com). Parents can sip organic wines, while kids swill Gewürztraminer—grape juice. Cap off your spree at the reopened Top of the Rock observation deck (30 Rockefeller Center; 877/692-7625; www.topoftherocknyc.com). From 67 stories up, you'll be the top of the heap.