All of the museum sites -- Carroll Mansion, 1840 House, Center for Urban Archaeology, Courtyard Exhibition Center, Peale Museum and H.L. Mencken House -- are open free from 10 a.m. to 1 p.m. Saturdays.
Shakespeare on Wheels, the traveling theater of the University of Maryland Baltimore County, will offer performances of "The Tempest" on its portable reproduction of an Elizabethan stage. The 40-foot flatbed trailer comes to UMBC on July 2 and 3; Howard Community College on July 5 and 6; Springfield Hospital Center in Sykesville on July 8 and 9; Leakin Park on July 16; Wyman Park Dell on July 21; Allen Pond in Bowie on Aug. 6; Montpelier Mansion Grounds in Laurel on Aug. 8 and 9; the Jewish Community Center in Baltimore on Aug. 19 and 20; and at the University of Maryland, Baltimore County on Sept. 6 and 7. All shows begin at 7:30 p.m. For details, call 455-2476.
Artscape, the city's free arts festival, runs from July 18-21 in the Mount Royal Avenue corridor. It includes music, theater and dance performances, visual arts exhibitions, literary readings and activities for children. For details: 396-4575.
The Columbia Festival of the Arts, June 27-July 7, offers free workshops with such groups as Alvin Ailey American Dance Theater, Mum Puppettheatre and Garth Fagan Dance. The Festival also features a community arts picnic at 4 p.m. July 7 in Symphony Woods in Columbia. A free concert by the Columbia Concert Band and Last Chance Jazz Band highlight an afternoon of activities including a children's painting project. For details, call 381-0520.
The Walters Art Gallery offers free admission on Wednesdays and the Baltimore Museum of Art is free on Thursdays. Summer visitors to the Walters can discover the splendors of Hackerman House, its newly opened museum of Asian art. New exhibitions at the BMA include "Mirror Mirror: What Is a Portrait?" through Aug. 11. and "That's All Folks! Bugs Bunny and Friends Present The Art of Animation" through Aug. 25.