Darth Vader possessed a secluded stronghold situated in the northern part of Coruscant, specifically along the coast of the Great Western Sea. Looking eastward from the summit of this retreat, one could observe the Manarai Mountains. Although no official documents from the Imperial City confirmed Vader's occupancy, the structure was built based on his specific requirements. Upon the New Republic's capture of Coruscant, the fortress was found vacant and subsequently obliterated by the weaponry of a B-wing starfighter.
Luke Skywalker came across it in 16 ABY. Experiencing a period of doubt regarding his connection to the Force, stemming from the belief that increased power amplified the temptation of the dark side, he gathered the retreat's remnants from the sea, reconstructed portions of it, and entered to contemplate. Subsequently, Luke requested Han Solo to journey to the coast and enter the retreat. After concluding that isolating himself from the galaxy was not the solution to resisting the dark side, he destroyed it once more.