J. MAYER H. 及其合伙人事务所为2015年在德国卡尔斯鲁厄城堡花园举行的城市300周年庆典上设计了一座临时表演建筑。节日期间，各种音乐会，戏剧表演，朗诵会，电影放映以及展览都在这个开放的构架中举办。这个临时建筑的造型呈放射线状几何体，结构严谨，视觉效果抢眼。展馆端头一侧是表演舞台，中心是咖啡厅和可举办各种活动的开放空间。展馆在6月–9月投入使用，现在已被拆除。建筑师为其设计的构造允许建筑被运输至其它地方重复搭建使用。

KA300 Pavilion for the City Jubilee, Schlossgarten, Karlsruhe, designed by J. MAYER H. und Partner, Architekten. To celebrate the three-hundred year anniversary of the founding of the city of Karlsruhe, this temporary event pavilion was erected in the city’s Schlossgarten. During the festival summer, various concerts, theatre performances, readings, film screenings, and exhibitions was hold in the open structure.

The pavilion offers a large auditorium with a stage: it is the center of the jubilee activities around the city and a meeting point with a café. The twisted pattern of the pavilion refers to the strictly geometric, radial layout of the Baroque planned city of Karlsruhe with the palace as the focal point, transforming it into a spatial field of lines. On several layers in and on the structure, exhibition platforms, resting spaces, and viewing platforms emerge. In a competition with tendering, J. MAYER H. und Partner, Architekten and Rubner Holzbau received the commission for their proposed dynamic wood construction using bar profiles. Construction started in February 2015. All wood provided by Rubner is supplied ready for installation on the site in order to guarantee a short and timely construction on Schlossgarten grounds. After the closing of the anniversary celebration, the temporary pavilion was be dismantled, transported and reused afterwards in another location.