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

Lecture by landscape architect and artist W. Gary Smith, Coastal Maine Botanical Gardens, Boothbay, $12, free for members. 633-4333. Author of “From Art to Landscape: Unleashing Creativity in Garden Design,” 2 p.m. Wednesday.

Maine Boats, Homes and Harbors Show, Maine-built boats, as well as marine supplies, fine furnishings and home wares, art and jewelry, and sustainable energy products, Harbor Park, Rockland, $12, 12 and under free. 594-8622. 10 a.m. to 6 p.m. Friday and Saturday. Through Aug. 14.