Stroll for two hours with an informative guide through the labyrinth of food stalls at philadelphias 9th street italian market considered to be the oldest and largest open air market in the country search for authentic philadelphia foods and shop to your hearts content amid a plethora of cheeses chocolates deli items and baked goods youll have a chance to chat with local vendors and view mosaic art in south phillys characteristic neighborhoods for a personalized experience this small