On the oldest maps Finland, even Scandinavia, was treated as one entity. On maps from the first half of the 16th century, when makers of maps slowly began to have more information on the interior of Finland, one factor characterising Central Finland was Lake Päijänne. On the German Jacob Ziegler's map of 1532 the only lake in Finland was located in Häme (Tavastia) and called PEVNTHE or Päijänne. In this regard Päijänne can be considered Finland's "oldest" lake! Ziegler knows of no other names in the inner parts of the country.