Attu Mountain

Attu is the westernmost and largest island in the Near Islands group of the Aleutian Islands of Alaska, and the westernmost point of land relative to Alaska, the United States, and America. The island became uninhabited in 2010.The island was the site of the only World War II land battle fought on the continental United States, and its battlefield area is a U.S. National Historic Landmark.

Attu Station, a former Coast Guard LORAN station, is located at 52°51′N 173°11′E, making it one of the westernmost points of the United States relative to the rest of the country. However, since it is in the Eastern Hemisphere, being on the opposite side of the 180° longitude line as the contiguous 48 states, it can also be considered one of the easternmost points of the country.