Quincunx - mlichtenstein/13thAgeSK GitHub Wiki
The Quincunx is a five-chambered building of remarkable construction, most notable for being the home of O, the only known incarnation of the Dreamer, who creates truth what cannot be known. It is possible that the chambers may in-fact be trees. It is also possible that there are nine chambers or trees, rather than five. Certain other numbers of chambers or trees are also possible. Neither two, nor six, nor seven, nor eight are one of those numbers.
The Quincunx exists on a torus, but everything may.
The location is not known.