A resort world described as the vacation capital of the Horvian Cluster, chosen by Jadzia Dax for the honeymoon she and Worf never managed to take.
Casperia Prime is a well-known pleasure planet. It is mentioned in the Deep Space Nine episode Change of Heart (2374) and never shown.
Worf and Jadzia, recently married, debate where to spend their delayed honeymoon. Worf has a more austere destination in mind, but he gives way and agrees to Casperia Prime. Before they can go, they are sent to the jungle world Soukara to collect a Cardassian informant. Jadzia is badly wounded there, and Worf abandons the mission to save her.
The planet is also named in Inquisition, where Bashir is preparing to leave for a medical conference there when Sloan of Section 31 has him confined to the station.