After Ketchikan, we sailed up the Tracy Arm Fjord. At the end of it you see the Sawyer Glaciers. It's incredible as you sail up the fjord negotiating among the huge ice floes. Occasionally you'll see blood on a floe where some predator has enjoyed his dinner.
We discovered the outside observation deck at the forward end of the 12th deck on the Solstice. You access it through the spa.