My second postcard arrives from the lovely city of Groningen, Netherlands. Groningen is apparently the largest city in the northern part of the Netherlands, and dates as far back as 3950 BC. It is a large university town, with approximately 45,000 students. It was sent by user Christoffel, who is employed by a green political party in her country. This is the most popular card I have received so far, according to the lovely people at Flickr.