Il fait 20°C donc bon. The working celsius thermometer on the exterior wall, première étage, affords the entire street a handy means to tell the temperature. The beautiful window boxes along this street in the Marais just add to the scene (36, rue du Poitou). The thermometer dates prior to 1948 when the measure was changed from Centigrade to Celsius.
Remember, you must look up or you will definitely miss treats like this. Also, remember to look down as well or you may step in another type of treat (not a good one).