The 40th annual Market Days is underway in Concord.
The event runs through Saturday and tents will line Main Street with sidewalk sales, food vendors, live music, and other activities.
Stephanie Green of Hopkinton comes every year, and says the three-day event creates a real sense of community.
“And it’s just nice to see people using the downtown. I’m always commenting about how the nice thing about Concord is that is really does have a thriving downtown, which so many communities no longer have.”