Portland Symphony Orchestra Show House Party and Lobster Bake, PSO fundraiser, $40. 773-6128 ext. 311. Tour the Tudor-style house in Portland the night before it’s redesigned, 5:30 to 7:30 p.m. Wednesday.

Merryspring Kitchen Tour, to benefit Merryspring Nature Center, various locations, Camden, $25-$30. 236-2239. In each of the seven unique kitchens on the tour, a chef will serve cuisine samples, 10 a.m. to 3 p.m. Wednesday.

Decorator Show House, tour home decorated by interior designers; benefits the Museums of Old York, Emerson House, York, $20. oldyork.org. 1 to 4 p.m. today; 10 a.m. to 4 p.m. Monday to Wednesday, Friday and Saturday; 10 a.m. to 7 p.m. Thursday. Through Aug. 13.

RFA Home Tour, four homes with excellence in architecture, construction and interior decor, tickets available at the Rangeley Lakes Chamber of Commerce at 6 Park St., $15. 864-2963. 1 to 4 p.m. Tuesday.

Listening Event, at which the public can offer suggestions for the gardens; reservations requested, Coastal Maine Botanical Gardens, Boothbay. 6:30 to 8 p.m. Wednesday.