Boreth
Boreth was a planet in the Klingon Empire, and the location of the important Boreth monastery. According to the Story of the Promise, Kahless would one day return to lead the Klingon people on that "point of light". The planet later became a popular destination for devout Klingons seeking to discover the spirit of Kahless. To the Klingons, it is the most sacred location in the Empire.
In 2369, Worf visited the monastery on Boreth in an attempt to rediscover his Klingon heritage. It was there that Kahless apparently returned from Sto-vo-kor, although it was later revealed that he was a clone. (TNG: "Rightful Heir") Worf visited the planet again in 2371 following the destruction of the USS Enterprise-D. (DS9: "The Way of the Warrior")
A view of the surface of Boreth was depicted on several viewscreens on Deep Space 9's Promenade and Replimat. (DS9: "The Muse")
