Anchorage, Alaska is 13 times larger than Atlanta.
Area: 4,476 km2 calculated
Anchorage is a unified home rule municipality in the southcentral part of the U.S. state of Alaska. It is the northernmost city in the United States with more than 100,000 residents and the largest community in North America north of the 60th parallel. Wikipedia
Area: 346 km2 calculated
Atlanta is the capital of and the most populous city in the U.S. state of Georgia, with an estimated 2013 population of 447,841. Atlanta is the cultural and economic center of the Atlanta metropolitan area, home to 5,522,942 people and the ninth largest metropolitan area in the United States. Wikipedia