Note 050
There are three topographical points which indicate the
situation of the palace. 1. The staircase which connected it
with the Hippodrome or Atmeidan. 2. A small artificial port
on the Propontis, from whence there was an easy ascent, by a
flight of marble steps, to the gardens of the palace. 3. The
Augusteum was a spacious court, one side of which was
occupied by the front of the palace, and another by the
church of St. Sophia.
Note to Chapter 17 of Decline and Fall by Gibbon