I will start with some ideas and others will also reply.
Icy Strait Point has excellent whale watching.
Skagway is all about the Klondike gold rush. A number of the buildings are operated as museums by the National Park Service. For train buffs there is the White Pass and Yukon Railway.
Juneau is our state capitol. Some ideas include Mendenhall Glacier, our state museum, Sealaska Heritage Institute and the Mt. Robert’s tram.
Ward Cove is not in downtown Ketchikan which is a problem.