Senate Hall The Senate Hall , Republic Senate Chamber , Senate agora , or Old Senate Chamber was the building that housed the Galactic Senate in Republic City on Coruscant from the earliest days of the Galactic Republic ( circa 15 , 000 BBY ) to the time of the Old Sith Wars . History . A large stone structure on Coruscant , the Senate Hall was used to convene sessions of the Galactic Republic Senate during the institution ' s early millennia of existence . The Republic Senate Guardsmen were responsible for guarding not only the building , but the senators , Supreme Chancellor , Vice Chair , and the Staff Aide during senatorial meetings . The building was also used during formal Inquisitions . In 3996 BBY , during the trial of the fallen Jedi Knight Ulic Qel - Droma , the Sith Lord Exar Kun entered the Hall , placing the assembled senators and the Supreme Chancellor under his control as he stormed the chamber . Following his execution of the Chancellor , Kun engaged Jedi Master Vodo - Siosk Baas in a duel , killing his former master before freeing Qel - Droma . Following the Great Hyperspace War ' s conclusion , the Senate commissioned the construction of a new Senate Hall to accommodate the increasing number of member worlds within the Republic . On the foundations of old Senate Hall , the new Senate Tower was established , crowned by a massive rotunda that rested over a hundred levels above the old hall . Coming into disuse , the old Senate Hall was used for the trial of the Mandalorian scientist Demagol in 3963 BBY for his role in the early Mandalorian Wars . One year later , the agora was used for another show trial , that of the Jedi Master Dorjander Kace and his followers , the Mandalorian Knights . At some point in its history , the Hall was retired and became a tourist attraction for the throngs of civilians who visited Coruscant daily . Layout . A massive stone and glass building , the Senate Hall was located at the heart of the Senate District on Coruscant . Originally an open - air stadium , the Senate Hall was enclosed within a towering A - frame shaped structure with walls slopping up and inward , following the attack on Coruscant by the Sith . The facility had a glass facade which allowed natural light to spill into the facility , and was located next to a large spaceport . The main entrance to the building was positioned at the top of a massive staircase and past an ornately decorated doorway . Beyond the entrance was a lofty chamber which made up the heart of the building , featuring stadium - style seating with stone benches accommodating a very large number of senators . The center of the massive room was occupied by the Supreme Chancellor ' s podium , a massive stone column ringed by a spiraling staircase leading to the smooth pinnacle platform . A smaller podium rose from the floor in front of the Chancellor ' s ; this platform was used by delegations who wished to formally address the Senate , as well as an area used to hold criminals during formal trials . The upper level of the room was open to foot traffic and from which massive pillars stretched to the ceiling . At either end of the hall , dual statues of massive winged Humanoids knelt inward towards a large flaming podium . Behind the scenes . Counter to all prior sources stating that the Grand Convocation Chamber was erected following the duel in the old Senate Hall between Exar Kun and Jedi Master Vodo - Siosk Baas during the Great Sith War , " " depicts the Chamber in operation nearly one thousand years prior to when it should first make an appearance . Note that Ludo Kressh ' s appearance in the same " Timeline " video is also inaccurate to his true appearance as shown in " " , and that the Massassi spotted in the video are inaccurately portrayed too . Such discrepancies could in fact be explained away as artistic licence .