Buildings by the architect Johann Conrad Schlaun are examined as part of a double impromptu, an excursion and a theoretical paper, which can also be taken individually.

Impromptu 1: An excursion to Münster is aimed at the main works of the architect Johann Conrad Schlaun. The Clemens Church, the Erbdrostenhof and the former prince-bishop's residence will be visited. In preparation, the original planning material will be compiled and analysed. The on-site visit includes both a description of the building and an approach to the structural design detail. The results of the excursion are recorded in a collectively compiled folder in a given layout.

Impromptu 2: A brick building from the oeuvre of the architect Johann Conrad Schlaun is analysed with regard to the building material brick. The typology of the ground plan and the symmetry of the elevation are graphically linked to the module of the brick in order to understand the typical corner offsets of Schlaun's architecture and to document them in an accompanying text.