http://luxembourg.co.uk/pics/vianden_water.jpg
places vianden castle squarely above the right bank of the river ours
& thus on the wrong bank for it to have really been a bicondominial
tripoint castle
oops
tho the vianden seigneury as a whole may still have spanned the 2 condos &
their terminal points
depending of course on the dates of them all
for whatever that may still be worth
even if not a cherry on top
in any case the news throws the cause & minimum age of the peculiar
luxembourg salient on the left bank of the ours into some doubt
since it could now conceivably have had nothing to do with the castle or
its position
m