Judgment hall : Gr. praitorion (John 18:28,33; 19:9; Matthew 27:27), "common hall." In all these passages the Revised Version renders "palace." In Mark 15:16 the word is rendered "Praetorium" (which see), which is a Latin word, meaning literally the residence of the praetor, and then the governor's residence in general, though not a praetor. Throughout the Gospels the word "praitorion" has this meaning (comp. Acts 23:35). Pilate's official residence when he was in Jerusalem was probably a part of the fortress of Antonia.
The trial of our Lord was carried on in a room or office of the palace. The "whole band" spoken of by Mark were gathered together in the palace court.