I'm Finally back and with some updates in this Map, Check it out.
+Under Water City now has an "Industrial Area".
+Added new Domes to the Under Water City.
+Added new gardens to "The Heaven".
+Added a new bridge in the floating island.
+Added a new Lighthouse which leads to the Under Water City.
+Already using Sea lantern.
+Added some "Air Ducts" to the Under Water City (just Decoration) 
+Improved Columns used on the bridges
-Fixed the wrong placed stairs.
-Fixed ALL the bridges.
-Better "Monster Arena" entrance.
-Wrong placed blocks destroyed.
-Other Minor Updates.
(If you guys find something wrong in the map, say it in the comments, i'll try to fix it)