The Wohldenberg Castle is a ruin, located about one kilometer southwest of the small town Sillium. Sillium belongs to the municipality Holle in the district of Hildesheim. Sillium’s emblem shows also the castle complex.
Wikipedia https://en.wikipedia.org/wiki/Wohldenberg_Castle
Address 4 Wohldenberg, 31188, Germany
Coordinates 52°3'31.75" N 10°9'10.527" E