WingSpan Theatre Company celebrates its 15th season with the A.R. Gurney play “Children,” which premiers tomorrow at 8 p.m. at the Bath House Cultural Center and runs through Oct. 20. Based on a John Cheever short story, the play shows a wealthy family’s idyllic New England summer interrupted by the arrival of an estranged son. Tickets cost $18-$20 and can be purchased online.

Also at the Bath House, applications for the Winter Art Mart are due Oct. 10 by 5 p.m. More than 40 art vendors will showcase work at the Art Mart Nov. 16-18. Proceeds benefit the Bath House. Find more information and the application here.