Bariius

The Bariius was a massive astronomical instrument found inside Bariius Hall in Clock Town on Level 3 of Poorthwart. Considered the single-most important astronomical tool in Poorthwart by experts, including Tyco Brahe, the Bariius was used to determine the position of distant psychic worlds though to exist beyond the borders of Poorthwart. This was important because most of Poorthwart's borders were either openly hostile (Carnival Weep, the Terror Zones, the Fear, the Sea of Ships), dangerous for outsiders to enter (the Titan Zones, the Great Wobbly Maw, the Great Open Air) or simply unexplorable.

By using the Bariius, astronomers were able to tell the difference between effects on Poorthwart which could be coming from outside forces (as yet unexplained), and those which could be referred to the Anchorites for interpretation as effects of the Wobbles and the Weirds.

The Bariius, along with all of Clock Town, was destroyed shortly after the Cataclysm by an as-yet unknown force.