In this picture the clocks on the left are duplicates of those on the right. The clocks at the centre of the picture are actually situated 180º opposite to the clocks left and right. This view is a full, 360º with some overlap.

The 'arches' are a single, rectangular doorway between two rooms. The view from one room on the other is a straight line east to west. i.e. in reality, you would have to physically turn 180º to see from one room to the other.