Visping is the capital city of Borasnen, one of the five Roknari princedoms. It has an excellent port and is thus a coveted target for land-locked Chalion in their wars with the Roknari.
Prior to the events of Curse of Chalion, Cazaril was serving as castle warder at Gotorget, a key border fortress to the south of Visping. When the March dy Jironal surrendered the castle to the Roknari, he also dealt a crucial blow to Chalion's expansion plans, since the fortress would now help the enemy. Cazaril was subsequently marched to Visping where he was sold as a galley slave.