Savannah, Georgia is 1,145 times larger than Boston Common.
Area: 0 km2 calculated
Boston Common is a central public park in Boston, Massachusetts. It is sometimes erroneously referred to as the "Boston Commons". Dating from 1634, it is the oldest city park in the United States. Wikipedia
Area: 223 km2 calculated
Savannah is the oldest city in the U.S. state of Georgia and the county seat of Chatham County. Established in 1733, the city of Savannah became the British colonial capital of the Province of Georgia and later the first state capital of Georgia. Wikipedia