Anchorage, Alaska is 35 times larger than Boston.
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: 129 km2 calculated
Boston is the capital and largest city of the Commonwealth of Massachusetts in the United States. Boston also serves as county seat of Suffolk County. Wikipedia