Discovery Princess: 7-Night Alaska

Whittier is a tiny town of about 220 residents on the western shore of Prince William Sound, serving as the Gulf of Alaska embarkation and disembarkation point for one-way Alaska cruises marketed as departing from or arriving in Anchorage. Anchorage itself is 60 miles north by road, connected to Whittier through the Anton Anderson Memorial Tunnel, the longest highway tunnel in North America (2.

Hubbard Glacier is not a port where passengers go ashore. It is a scenic cruising destination in Yakutat Bay at the northern end of the Gulf of Alaska, where ships slow to a crawl and spend several hours in front of North America's largest tidewater glacier.

Glacier Bay is not a traditional cruise port. There is no dock, no town, and no getting off the ship for most passengers.

Icy Strait Point is a privately developed cruise destination adjacent to Hoonah, a Tlingit village of about 800 people on the northern shore of Chichagof Island. Unlike most Alaska ports, this is a purpose-built cruise facility operated by Huna Totem Corporation, the local Tlingit Alaska Native corporation, meaning tourism revenue stays in the indigenous community.

Juneau cruise port is the capital of Alaska and one of the main stops on Inside Passage itineraries. The town sits on a thin strip of coast at the foot of Mount Roberts and Mount Juneau, backed by the 1,500-square-mile Juneau Icefield and surrounded by the Tongass National Forest.

Ketchikan cruise port is the first major stop on most Alaska Inside Passage itineraries coming up from Seattle or Vancouver. The town sits on Revillagigedo Island in Alaska's southernmost panhandle, wedged between the ocean and steep forested mountains.