The park’s crowning glory is the Harding Icefield, a remnant from the last ice age that blankets over 700 square miles of Alaskan wilderness in a frozen expanse that has to be seen to be believed.

Nestled along the Madison River, Ennis is a fly-fishing paradise that will make every day of retirement feel like a getaway. The main street looks like it jumped straight out of a Western movie, with ...