Home › Venues › Opus on Main Opus on Main Tickets Buy tickets for concerts at Opus on Main in Willimantic, CT. No Upcoming Events No upcoming events scheduled at Opus on Main. Please contact us with any corrections. Hotels & Lodging Near Opus on Main About the Venue Opus on Main At-a-Glance Address877 Main StreetWillimantic, CT 06226United States Map & Directions Advertisement