We explore Manhattan's most fascinating neighborhoods with in-depth walking tours that reveal New York from glitz to grit: SoHo, Greenwich Village, Chelsea, High Line, Chinatown, Lower East Side, East Village, Midtown, Central Park, Upper West and East Sides, Lower Midtown, Times Square, Financial District, and 4 Art Museums: Met, Frick, MoMA and Whitney, with many tips to plan your own trip.