MONTREAL

The Montreal Museum of Fine Arts is the only North American venue for this multidisciplinary exhibit marking the end of the millennium. "Cosmos: From Romanticism to the Avant-Garde" displays paintings, sculpture, books, decorative objects and scientific instruments, 380 items in all. An international team of curators has divided the exhibition into categories documenting astronomical discoveries, European colonial expansion, voyages to the poles, lunar exploration, imaginary cosmologies, utopian theories and astrophysics. Through Oct. 17 at the museum, 1380 Sherbrooke St. West, Montreal. Hours: Tuesday through Sunday, 11 a.m. to 6 p.m.; Wednesday, 11 a.m. to 9 p.m. Admission (in Canadian dollars): adults $12, students and seniors $6, children $3. Call 1-800-361-4595.

LOS ANGELES and SAN MARINO, Calif.

The celebrated British actress Sarah Siddons (1755-1831) is featured in two exhibits at the J. Paul Getty Museum and the Huntington Library. "A Passion for Performance: Sarah Siddons and Her Portraitists" at the Getty and "Cultivating Celebrity: Portraiture as Publicity in the Career of Sarah Siddons" at the Huntington explore Siddons's flamboyant career.

A new play by Frank Dwyer and directed by Corey Madden is being produced in conjunction with the shows. "The Affliction of Glory: A Comedy About Tragedy" will be staged Aug. 14-Sept. 5 at the Getty Center. Showtimes are 8 p.m. on Aug. 19-21, 26-28 and Sept. 2-4; matinees at 2:30 p.m. on Aug. 21-22, 28-29 and Sept. 4-5. Tickets are $28, students and seniors $22.

Through Sept. 19 at the J. Paul Getty Museum, 1200 Getty Center Dr., Los Angeles. Tuesday and Wednesday, 11 a.m. to 7 p.m.; Thursday and Friday, 11 a.m. to 9 p.m.; Saturday and Sunday, 10 a.m. to 6 p.m. Admission free; parking $5 and reservations are required. Call 310-440-7300.

Through Sept. 19 at the Huntington Library, Art Collections and Botanical Gardens, 1151 Oxford Rd., San Marino. Tuesday through Sunday, 10:30 a.m. to 4:30 p.m. until Sept. 5. Tuesday through Friday, noon to 4:30 p.m.; Saturday and Sunday, 10:30 a.m. to 4 p.m. after Sept. 5. Admission: $8.50 adults, $5 students. For information call 626-405-2141.