Casula Powerhouse Museum, 1 Powerhouse Road, Casula. Daily, 10am-5pm. Admission free. Inquiries: (02) 9824 1121. Until April 23. A Fit Place for Women: NSW Parliament This exhibition explores the history of women in state politics, charting the contributions, struggles and triumphs of women in the state parliament, from campaigners to parliamentarians and parliamentary officers. Features women from Millicent Preston Stanley to Helen Sham-Ho. NSW Parliament House, 6 Macquarie Street, Sydney. Daily, 9am-5pm. Admission free. Inquiries: (02) 9230 2111 or online. Until April 28. Margaret Olley: Painter, Peer, Mentor, Muse A sense of sociability, of learning together, mutual encouragement and common purpose is the most appealing aspect of the Margaret Olley exhibition at SH Ervin Gallery in Sydney. Olley was not herself a great artist, although she painted some appealing pictures, but she was part of a network of relationships that extended from her days as a student to her later encouragement of younger practitioners. Olley’s best work was in still-life compositions, particularly within the environment of her home, which became legendary for its dense assemblages of pictures, furniture, vases, flowers, screens and objects of all kinds. SH Ervin Gallery, 2 Watson Road, Millers Point, Sydney. Admission: $7-$10. Tues-Sun, 11am-5pm. Inquiries: (02) 9258 0173. Until March 26. Velocity: Vintage Racing Bikes Postman and cycling enthusiast Peter Taylor services bicycles from his garage workshop and maintains a large collection of vintage racing bikes. Highlights from Peter’s collection will be on display, ranging from rare post-World War II European bikes to an Australian bike raced at the 1956 Melbourne Olympics. Canberra Museum and Gallery, 176 London Circuit, Canberra. Mon-Fri, 10am-5pm; Sat-Sun, noon-5pm. Admission free. Inquiries: (02) 6207 3968. Glass Alphabet This unique conceptual work is composed of 26 individual objects, each depicting a letter of the alphabet, produced by some of Australia’s most prominent glass artists connected with Canberra. Glass Alphabet is curated by Mel George, an independent curator with practice as a glass artist. Canberra Museum and Gallery. 176 London Circuit, Canberra. Admission free. Mon-Fri, 10am5pm; Sat-Sun, noon-5pm. Inquiries: (02) 6207 3968.