The Courtroom, housed in the State Capitol, belongs to the people of Oklahoma, as do all courtrooms in this State. All sessions conducted in the Courtroom are open to the public. Citizens are welcome, and they are urged to attend these sessions. The Supreme Court Courtroom is the most beautiful room in the State Capitol Building. Along the walls of the courtroom are the portraits of the first five Supreme Court Justices --- Honorable R.L. Williams, Honorable Matthew Kane, Honorable Jesse J. Dunn, Honorable John B. Turner, and Honorable Samuel W. Hayes. The pictures of the current members of the Court are placed on the walls immediately outside the Courtroom doors. The first five Justices initially presided over all civil and criminal cases, but as the population began to grow and the court docket lengthened, it became clear that a five-judge court would not be able to handle all the cases. Four other Justices were appointed in 1917. In 1918, the Court of Criminal Appeals was created and three judges were appointed to preside over all criminal matters. (The Court of Criminal Appeals now consists of five judges.)

Solid mahogany found throughout the room was imported from the West Indies in 1918. Four large pillars of Vermont marble, weighing two tons each, support the ceiling. The ceiling is one of the most beautiful aspects of the Courtroom. Each intricate square reminds the viewer of an elaborate wedding cake. The ten solid brass light fixtures illuminating the Courtroom were designed in New York City in 1970. At the north end of the Courtroom beneath the ceiling, a piece of Vermont marble bears the inscription: "The safety of the State is the highest law" --- written by Justinian. Vermont marble is also found beneath the ceiling at the south end of the Courtroom. It carries the inscription: "The foundations of justice are that no man shall suffer wrong" --- a quotation from Cicero.