Alaska is a non-contiguous U.S. state on the northwest extremity of North America. It borders the Canadian province of British Columbia and the Yukon territory to the east; it shares a western maritime border in the Bering Strait with Russia's Chukotka Autonomous Okrug. The Chukchi and Beaufort Seas of the Arctic Ocean lie to the north and the Pacific Ocean lies to the south. Technically a semi-exclave of the U.S., it is the largest exclave in the world.
The Russian settlement of St. Paul's Harbor (present-day Kodiak town), Kodiak Island, 1814
Miners and prospectors climb the Chilkoot Trail during the 1898 Klondike Gold Rush.
U.S. troops navigate snow and ice during the Battle of Attu in May 1943.
Bob Bartlett and Ernest Gruening, Alaska's inaugural U.S. Senators, hold the 49 star U.S. Flag after the admission of Alaska as the 49th state.
The Bering Strait is a strait between the Pacific and Arctic oceans, separating the Chukchi Peninsula of the Russian Far East from the Seward Peninsula of Alaska. The present Russia-United States maritime boundary is at 168° 58' 37" W longitude, slightly south of the Arctic Circle at about 65° 40' N latitude. The Strait is named after Vitus Bering, a Danish explorer in the service of the Russian Empire.
Satellite image of Bering Strait. Cape Dezhnev, Russia, is on the left, the two Diomede Islands are in the middle, and Cape Prince of Wales, Alaska, is on the right.
Little Diomede Island (US, left) and Big Diomede Island (Russia, right)