Myself, Ethan Aines and Mats G. Eriksson are proud to present our report on last year’s fieldwork at Landsjö Castle, Kimstad parish, Östergötland. Lots of goodies there! Construction on the castle seems to have begun between 1250 and 1275, and the site was abandoned halfway through an extension project some 50-75 years later. We also found a Middle Neolithic fishing site and an Early Modern smallholding among the ruins.
And on archive.org.
See also the report for 2014, the first documented excavations at the site.