Emperor Palpatine Surgical Reconstruction Center The Chancellor Palpatine Surgical Reconstruction Center , sometimes shortened to ChanPal SuRecon Center , crowned one of the tallest buildings on Coruscant . During the Clone Wars , it was also known as the Grand Republic Medical Facility or simply as the Grand Medical Facility . It later became known as the Emperor Palpatine Surgical Reconstruction Center , being commonly referred to as the EmPal SuRecon Center . It was an imposing spire that dominated its particular stretch of the Galactic City — later Imperial City — skyline . History . Dark designs . The Sith stronghold hid in plain sight with large windows that seemed to show that there was nothing to hide . In addition , it relied on the Jedi ' s reluctance to attack a hospital and risk the patients inside . It featured four landing pads for emergency cases near the top of the structure . The interior was lined with ultradense walls of neuranium shielding to conceal any radiation leak from the building ' s reactor . Surrounding this shielding was an exterior shell of durasteel armored with a lanthanide and duralium alloy . Palpatine performed acts of Sith alchemy within the ChanPal SuRecon . Darth Vader . This gloomy location was the site of Darth Vader ' s rebuilding . After Darth Vader ' s duel with his former Master , Obi - Wan Kenobi , Darth Sidious brought his badly wounded apprentice via shuttle to the Reconstruction Center where he was to be rebuilt . During the duel , Vader had sustained near - fatal third - degree burns , severe lung damage and the loss of his remaining limbs , as well as emotional pain . The damage to his body would be repaired through intensive cybernetic enhancement at the main laboratory . Palpatine also ordered the medical droids — two 2 - 1B surgical droids , one FX - 6 medical assistant droid , and one DD - 13 cybernetic surgical droid — to keep Vader awake during the process so the pain would make him stronger . Many of these droids had either participated in or observed the transformation of Qymaen jai Sheelal into Grievous . Upon his revival as a cyborg , Vader questioned his master about Padmé Amidala . Sidious replied that Vader had killed his wife in his anger . Overwhelmed by his despair in the belief he had killed his wife and their unborn child , Vader broke his bindings on the operating table and struggled to walk under the power of his new mechanical legs . His rage destroyed the medical droids that had saved his life and severely damaged the interior of the main laboratory . It also caused a worker to go deaf permanently . The workers didn ' t know it was Vader who was being worked on . They thought it had been either a ghost or all the beings who had been killed in the Clone Wars screaming one last scream . This rumor continued through 18 BBY . Galactic Empire . In the first months of the Galactic Empire , Emperor Palpatine used the EmPal SuRecon Center as his headquarters . He hosted meetings with members of the Imperial Senate in a throne room below his private chamber and Sith medical facility . He eventually moved his base of operations to the Imperial Palace once it had been rebuilt to his specifications . Darth Vader returned to the facility for repairs to his prosthetic right arm , damaged in a duel with Bol Chatak on Murkhana . Later in the reign of the Empire , the EmPal SuRecon Center became known to citizens as one of the most prestigious medical treatment centers in the galaxy . Its architecture included VLD2261 laser cannons , Royal Guard emplacements , a private meditation chamber for Palpatine , and other facilities used for training Dark Jedi . Korriban lightsaber crystal s , Sith scroll s , powerful Sith artifacts , bio - details of hundreds of generations of Sith , and a dark force reservoir were also housed in the building ' s center .