What is the National Harbor Wine & Food Festival?Held just outside Washington D.C. in National Harbor, Maryland this food and wine festival brings renowned chefs and food artisans from around the region. The festival features over 150 wines, beers and spirits - local and from around the world. The event is held in a prime location on the banks of the Potomac River, so attendees can enjoy water views and they sip and savor. Need to KnowThis event is ticketed and there are a range of package options, make sure to book advance.