Saxifraga Foundation aims to collate photographs of the centroids of all kilometre-squares in The Netherlands as a reference for the state of the landscapes in The Netherlands around 2015. A project called 'NL in Beeld' has been set up to achieve this and was actively run in the period 2011-2017. The resulting images can be found on www.freenatureimages.eu .
Although the project is dormant, we still welcome new images.