WORCESTER, Mass. – The Hanover Theatre is celebrating its 15th anniversary on Saturday with a party and a season kick-off event.

The festivities are free and open to the public. There will be an open house at the conservatory as well as the premiere of a documentary about the creation of the theatre.

“All of our founders will be here, the folks who really made it happen,” said Hanover Theatre president Troy Siebels. “And then we’re going to cap off the day with a block party with the South Street Band performing on the new outdoor stage on the new plaza.”

The celebration starts at 2 p.m., and the plaza party begins at 6:30 p.m.