The coloring page appears to be a landscape with a large body of water taking up the center of the page. On the left side, a shoreline with trees and mountains in the background provides a beautiful, natural look to the environment. On the right side, a shoreline with buildings in the background gives the image a more urban vibe. A bridge spanning the water in the center of the page ties both of these sides together, creating a peaceful contrast between nature and modernity.
When it comes to how to color this page, I recommend making the body of water and sky a light blue to create a calming effect. The trees and mountains can be layered and colored in shades of greens and browns, and the buildings and bridge should be drawn with gray and white colors to represent a concrete look. Finishing touches - like using oranges, yellows, and purples for the sunset - could be added to bring even more life to the page.