Maridon Museum, 322 N. McKean St., is hosting Porcelain Painting Classes with instructor Frances Shiflet from 11 a.m. to 1:30 p.m. Wednesday. Fee is $13 for non-members, or $10 for members; materials are provided. Call 724-282-0123 for reservations. The museum features a new display of 19 Japanese samurai dolls, plus its permanent exhibits of hundreds of pieces of ancient and contemporary Asian art, as well as Meissen porcelain. Regular museum hours are 11 a.m. to 5 p.m. Tuesdays through Saturdays and noon to 5 p.m. Sundays; closed Mondays and holidays. Admission is $4 for adults, $3 for senior citizens and students, and free for children younger than age 8; children must be accompanied by an adult.

<B>Three Rivers Arts Festival</B> continues through June 22 in downtown Pittsburgh and features "Contained," a new exhibition that engaged 10 artists and artist teams to transform used shipping containers into immersive art experiences; an artists market with more than 300 artists and crafters; a Family Festival, with hands-on art experiences and the new community stage, where children from around the region will perform dance, music and theater; musical performances on the main stage, located at the Stanwix Triangle. Call 412-281-8723 or visit the Web site, www.artsfestival.net.<B>Silver Eye Center for Photography</B>, 1015 E. Carson St., presents "Alternative Focus" in the Main Gallery. This exhibition features pinhole photographs by Jesseca Ferguson of Boston and Tom Persinger of Pittsburgh through Saturday. New gallery hours are noon to 6 p.m. Wednesdays and Fridays, noon to 8 p.m. Thursdays, and 11 a.m. to 5 p.m. Saturdays, or by appointment. Admission is free. The New Works Gallery Online features Volume XVI through June 30. Visit the Web site, www.silvereye.org. Call 412-431-1810.<B>Pittsburgh Glass Center</B>, 5472 Penn Ave., is presenting "Glass & Steel: Art Transcends Industry" through Sept. 5. Gallery hours are 10 a.m. to 4 p.m. Fridays, Saturdays and Sundays; and 10 a.m. to 7 p.m. Tuesdays, Wednesdays and Thursdays. Call 412-365-2145.<B>Rivers of Steel National Heritage Area</B> is exhibiting "Monongahela Valley: A Time of Change, 1980-2000" featuring paintings, prints, photos and posters by Robert Qualters through Saturday in the Bost Building, 623 E. Eighth Ave. in Homestead. Hours are 10 a.m. to 4 p.m. Mondays through Fridays and by appointment Saturdays. Call 412-464-4020.