Imperial Capital, Imperial Center, Imperial Palace.
The original site of the Imperial Palace lay beside the Republic Senate Building. It had once been the residence and office of the Chancellor of the Galactic Republic, merely an annex of the Senate Building and not particularly large.
During Sheev Palpatine's tenure as Chancellor of the Republic, as power gradually concentrated in his hands, this annex began to expand. Offices and council chambers for many high-ranking officials were incorporated into it, and it gradually evolved into the true center of power.
From that period onward, the Chancellor's residence grew larger and larger. Overall, however, Sheev Palpatine had still been a diligent ruler at the time. To strengthen his ties with the Senate, he had conducted state affairs in the Republic Senate Building most of the time rather than remaining secluded in his residence.
After the Kingdom of Dawn withdrew from the war and Palpatine announced the reorganization of the Galactic Republic into the Galactic Empire, he renamed the Chancellor's residence the Imperial Palace and moved in directly.
From then on, he remained in the palace for long periods and rarely appeared in public again. He remotely controlled the workings of the entire Empire through layers of bureaucratic institutions and military command systems. Most of the time, he meditated atop the Imperial Palace, strengthening his connection to the Dark Side Force.
The Imperial Palace also began a massive expansion. What had originally been no more than an annex of the Republic Senate Building was almost completely rebuilt. The solemn government building was gradually transformed into a magnificent, luxurious palace, its scale continually growing until it rose ten thousand meters high, becoming the tallest structure on Coruscant.
Now, the Imperial Palace had become a colossal complex centered around a pyramidal structure, built entirely from an