Culture and the Arts Reward and Promotion Act Article 26

Private libraries, museums, art museums, art galleries, folk museums, experimental theaters, exhibition halls, and performance halls that have been established with the permission of the cultural and educational supervisory authority and have registered as a juridical person or were constructed by a juridical person and where related land and buildings are owned by the juridical person may be exempt from land and house taxes.
中文原文 文化藝術獎助條例第26條
經文教主管機關核准設立之私立圖書館、博物館、藝術館、美術館、民俗文物館、實驗劇場、展覽場館、表演場館,已辦妥財團法人登記,或由財團法人興辦,且其用地及建築物為該財團法人所有者,免徵土地稅及房屋稅。

English translation for reference only; the Chinese text prevails. Not legal advice.