Numinus City
Numinus City was a city located on the planet Calth[1a][2] which lay on the Boros River.[1a]
Numinus was one of the major cities of Calth. Notably, the Holophusikon (a "universal museum") lay on the city's outskirts. In addition, the Erud Highway passed through Numinus.[1b]
At the onset of the Horus Heresy, during the Battle of Calth, Numinus was reduced to a ruin.[2]