It's Market Square Day in Portsmouth this weekend. The day kicks off with a 10K Road Race, then the Square fills up with folks interested in strolling through a market filled with products and food - mostly from the seacoast region. Originally created to celebrate the renovation and beautification of Downtown Portsmouth and, in particular, Market Square, the Festival has grown in size along with the growth and popularity of Portsmouth. It is estimated that between 60,000 - 80,000 people walk through Downtown Portsmouth on that one day. There will also be a full day of entertainment - from music to dance, theatrical performances, and more. Admission is free!