The former Cistercian abbey of Alvastra in 1639.
My brother in arms against pomo nonsense, human/cultural geographer Clas Tollin, has put half the manuscript of his forthcoming book on-line beforehand (fully illustrated, in Swedish). The title is Storgårdar, egenkyrkor och sockenbildning i Omberg-Tåkernområdet under äldre medeltid, “Manorial farms, private churches and the genesis of parishes in the Omberg-Tåkern area in the Early Middle Ages”. (These are the Swedish Early Middle Ages, dating from about AD 1100 to 1250.) Hugely useful to me as I’m doing fieldwork and writing about the period up to AD 1000 in that very area, and likely to be interesting to many others too.