Hive Tarsus is also the site of one of Scintilla's sector famous landmarks, The Cathedral Illumination is the most important place of worship in the whole Calixis Sector.  it is the base of operations for Cardinal Ignato, the sector's most senior Adeptus Ministorum clergyman, whole leads the Synod Calixis from the cathedral's lavish .  The cathedral is an extraordinary collection of spires surrounding a cavernous central nave, topped with an enormous stained glass dome, through which the scorching light of Scintilla's equatorial sun blazes.