For only 80 RMB, you can get an annual ticket to visit 52 museums in the capital free of charge, as well as benefiting from a 50% reduction on the entrance prices in a further 36.  For the most part, you can even get another person in for free too.  Entrance is free for children under 1.20m.

Annual tickets for the city's museums (bowuguan tongpiao 博物馆通票) will be on sale from Post Offices in Beijing, as well as from:

Beishihuan Donglu, 108 Qianhe Jiayuan, Builiding 3, Room 202, Chaoyang District. 北京市朝阳区北四环东路108号千鹤家园3号楼202室.

Information: 010-8483-4123 or 010-8483-3902. Fax: 010-8483-3151. Website (currently only in Chinese): www.bowuguan.bj.cn