Fort Abercrombie is the best short outing from Kodiak town. The park preserves the remains of a Second World War coastal defence installation, but it is just as much about the setting: spruce forest, wildflower meadows, Lake Gertrude, surf-pounded cliffs, and views over the North Pacific.
Give it a couple of hours rather than treating it as a quick photo stop. The bunkers and gun emplacements are interesting, but the trails and headlands are what make the park feel like Kodiak in miniature.