Lately, our team has begun investigating the analysis of architectural drawings. This paper presents our first results. After a brief introduction to the specificities of architectural drawings and a short review of existing work, we describe the low-level processing steps we have implemented: segmentation, vectorization and detection of arcs, loops detection. In the present state of our work, we have investigated two complementary techniques for higher-level analysis; one is based on geometric analysis and symbol recognition, the other relies on the idea that architecture is a combination of spaces, and is therefore based on spatial analysis. We present our current results with these two techniques, and we suggest a number of perspectives for the continuation of this work.