The Shrine of Nyx

The Shrine of Nyx is an unknown place not marked anywhere on the world map of Myth, although it's assumed that it was located within trow territory. During Mazzarin's time, he got into a confrontation with the mage Sinis. Their encounter ended with Mazzarin using his powers to collapse the shine atop of Sinis.

Trivia
On the Beta 4 version of Myth: The Fallen Lords, Alric states that Mazzarin killed Sinis at Seven Gates.