I passed an old fort not far after leaving SPB on a cruise ship. There seemed to be an entrance to a tunnel on one side of the ship and the fort with 2 or 2 lighthouses on either the same side or the other side. I have been trying to identify that fort and lighthouses. I have some pictures posted in an album on pbase.com and will send a link if anyone on here thinks he/she can determine where I was. Can anyone help? If so, thanks in advance!