The most impressive accomplishment for a long-term preservation of geospatial data from Swisstopo
The main inspiration behind the UCIT was the Journey Through Time application by Swisstopo. The Swiss Federal Office of Topography has recently updated and extended the application.
The Journey Through Time part of it, is a combination of digitized maps from 1844 to today. The main purpose of the Swiss Government was to make geodata freely available to the public at no cost, using open source software.
Swiss cartography is renowned for its accuracy, quality and artistry and thankfully, they have produced a wonderful portal that allows you to explore the rich history of their work. Enjoy!