Out on a casual walk our first day in Reykjavik we saw the modern architecture of the Radhus (or city hall) as if it was sitting on the lake (Tjornin). It looked like an office building and we weren't expecting it to be open but it was and soon inside we found a small cafe which was also open. It was a cold rainy day so a hot cup of tea and warm apple cake (delicious) was a happy surprise. One wall of the cafe was entirely made of windows so that one could look out at the lake, which we were actually on, and the wildlife and the little bridges in the distance. The other attraction was in the next room and this was a model of Iceland laid out on a large table, probably 12' x 12'. The model was made over a number of years by a team of people and it shows the topography of Iceland in accurate detail; it shows very small towns in isolated areas. The model gives a better visual idea of Iceland's dramatic topography than any map could do. I don't know if there is anything else of interest to see in the Radhus but we spent an enjoyable hour here.