The Seymour Narrows is a 3-mile/5 km stretch of the Discovery Channel north of Vancouver Island, British Columbia that is notorious for the strength of the tidal currents flowing through it. The average width of the narrows is just 750 meters. During extreme tides, the current through the narrows is subject to severe Venturi effect, resulting in an increased velocity that can reach 15 knots. For much of its modern history, there was an additional hazard in the narrows called Ripple Rock, a shallow obstruction that claimed no fewer than 119 ships and 114 lives. In 1958, after months of tunneling and preparation, Ripple Rock was blown up in the largest commercial, non-nuclear explosion ever recorded in North America. Still, the navigation of Seymour Narrows is dependent on tidal and other conditions, and requires skill and technical accomplishment.

Ketchikan is a picturesque coastal town with a colorful frontier history, standing at the southern entrance to Alaskas famed Inside Passage. It began as a salmon cannery in 1885, built by company employee Mike Martin at the mouth of Ketchikan Creek. Once dubbed the Canned Salmon Capital of the World,’ today government, commercial fishing, and tourism are its main industries. The renowned Creek Street, perched on stilts along the mouth of the creek, would bring lasting infamy to the area for the red-light district that burgeoned there during the Gold Rush. The town’s site first served as a camp for Tlingit people, and for thousands of years this has been their home. Their rich culture is being preserved to this day. A visit to Ketchikan is not complete without visiting one or all of Native American sites such as Totem Bight State Park, Potlatch Park, Saxman Native Village and the Totem Heritage Center. Together, these locations comprise the worlds largest collection of standing Native American totem poles. VIEW CRUISES

A stroll through the streets and National Historic Park of Sitka is a glimpse into its unique and colorful past. A blend of Tlingit and Russian cultures defines this first capital of Alaska. Although fish canning and gold mining were the initial catalysts for growth in Sitka, the construction of an air base during World War II truly paved the way for Sitka to come into its own. One of Sitkas most intriguing structures is the Cathedral of Saint Michael, built in 1848 to honor a Russian Orthodox bishop. Sitka’s history begins thousands of years ago with the Tlingit people and their use of the land for sustenance and spirituality. Old Sitka, located just north of the present-day settlement, was founded by Russian-American Company trader Alexander Baranov in 1799. Originally named Novo-Arkhangelsk (New Archangel) under Russian rule, its name was changed to Sitka after Alaska was purchased by the United States in 1867. Sitka is a Tlingit word meaning by the sea.’

The Hubbard Glacier is the largest, and one of the most spectacular tidewater glaciers in North America. Its ice cliffs, some 400’ (121 m) tall, calve icebergs into the fjord, which may frequently be larger than a five-story building. The glacier’s surface is creased and contorted, resembling the wrinkled skin of a giant elephant. Records show it has been growing in thickness and advancing since 1895. This stands in stark contrast to other glaciers around the world, most of which have been receding during the past century. In 2002, the glacier blocked Russell Fjord for two and a half months, raising water levels 61’ (18 m) and threatening local communities with flooding. Nutrient-rich waters along the glacier face attract many species. Gulls and kittiwake colonies adorn smaller islands and harbor seals patrol the icy waters. In 1890, Israel Russell explored the area of Yakutat Bay and Hubbard Glacier, naming it after Gardiner G. Hubbard, a financier of his expedition and a founder and the first president of the National Geographic Society. VIEW CRUISES

The largest of the Aleutian Islands, Kodiak is also Alaska’s largest island the second largest in the United States. Although occupied by native people for some 7,000 years, it languished in relative obscurity until the Second World War, when it housed as many as 25,000 troops. Fort Abercrombie, once the major center of North Pacific operations, today is a State Historic Park and a good place to learn the history. At the other end of the road system is the United States Coast Guard’s largest base, with a fleet of orange and white watercraft and aircraft that serves the Alaskan fishing fleet and other shipping and maritime activities in the Pacific area. Kodiak harbor is seasonally home to a fleet of some 650 fishing vessels, including huge trawlers, long-line and crab boats. Fishing is also a popular draw for visitors, but they also are attracted by opportunities to view and photograph local birds and wildlife, including the island’s massive brown bears, the males of which weigh as much as 1,500 pounds and stand ten feet tall. In the town, the fur warehouse originally built by the Russian American Company in 1808 is now the Baranov Museum, the oldest standing building in Alaska. VIEW CRUISES

Blessed by a protective range of mountains and a relatively warm ocean current, Kushiro gets less than a third of the winter snow of its Hokkaido neighbor Sapporo, and twice as much sunshine as the nearby Kuril Islands. Thus it is an important reliably ice-free port during the winter. Like all of Japan, it is riddled with semi-active geothermal features and occasionally rattled by tremors. Scenic Lake Akan is ringed by hot springs. It also has an Ainu Koten museum with a replica village and folklore performances of the indigenous Hokkaido people. The Japanese Crane Reserve is a good place to see breeding populations of these large and graceful birds, so respected by the Japanese. The city encompasses Japan’s largest wetland, and the Kushiro City Marsh Observatory has a boardwalk to see it, as well as the Fureai Horse Park which offers equestrian tours into the forest.

This important port on Japan’s northern Hokkaido Island was the first to be opened to European and American trade. The result of this is a trove of Western-style buildings in the suburb of Motomachi that gives the impression of a movie set. The bell of the distinctive Haristo Greek Orthodox church is designated one of Japan’s official treasured “100 soundscapes.” Hokkaido is famous for its hot springs, much beloved by the Japanese. Yunokawa Hot Spring enjoys a commanding view of the sea, and its botanical garden is home to the Japanese macaques called “snow monkeys” because of their habit of soaking in the hot springs during the northern winter. Goryokaku is a 150-year old star fortress that holds the Magistrate’s Office, an excellent example of traditional Japanese architecture. Get a panoramic view from the observation platform atop the Goryokaku Tower.

Ishinomaki is a city on Japan’s Honshu mainland. Housed in a striking spaceship-shaped building, the Mangattan Museum is dedicated to the work of manga artist Shotaro Ishinomori. Along the coast, San Juan Bautista is a replica of a 17th-century Japanese galleon. Offshore, Kinkasan Island is home to wild deer and the 8th-century Koganeyama-jinja Shrine. Trails lead to the island’s summit for panoramic city views.