For the Swiss #mountains and #cartography fans https://eyeondesign.aiga.org/for-decades-cartographers-have-been-hiding-covert-illustrations-inside-of-switzerlands-official-maps/
It also contains a link to this highlight from Swisstopo - a timeline displaying 175 years of the country’s cartographic history, advancing in increments of 5-10 years. Over the course of two minutes, Switzerland is drawn and redrawn with increasing precision. Fantastic.