Build a portal room (needs 50 construction and 100k gp), then build a portal frame and a centerpiece. Bring 100 casts of the teleport you want the portal to be and designate this using the centerpiece.
Build a portal room (needs 50 construction and 100k gp), then build a portal frame and a centerpiece. Bring 100 casts of the teleport you want the portal to be and designate this using the centerpiece.