At the end of twelve months he walked in the palace of the kingdom of Babylon.
At the end of twelve months. This respite was granted to him to leave him without excuse. So the 120 years granted before the flood (Genesis 6:3). At the first announcement of the coming judgment he was alarmed, as Ahab, who for the time "fasted, lay in sackloth, and went softly" (1 Kings 21:27), but did not thoroughly repent; so when judgment was not executed at once, he thought it would never come, and therefore returned to his former pride (Ecclesiastes 8:11).
In the palace - rather, upon the (flat) palace roof, whence he could contemplate the splendour of Babylon. So the pagan historian, Abydenus, records. The palace roof was the scene of the fall of another king, David (2 Samuel 11:2). The eye is the avenue through which many of the temptations of the world rush in upon the soul. The tempter tried thus to overcome Jesus by a panoramic view of the glory of the world-kingdoms, but in vain (Matthew 4:8-10). The outer wall of Nebuchadnezzar's new palace embraced six miles; there were two other embattled walls within, and a great tower, and three brasen gates.