The Høje Målebordsblade, is mosaic 1 of several hundred individual 1:20,000 sheets and was the first official civilian topographical map of Denmark. The survey, by the Generalstabens topografiske Afdeling, was done between 1842–1895, with the first lithographic sheets published in 1862. Here is the same mosaic, with everything (except Bornholm) in the right place and in proper geographical context.
The original site has a beautiful 4344✕4510 pixel version that I hope you visit.
(Edit: Thanks to Rocío for correcting the Danish.)