Nature, and Science. The CfA is located in Cambridge, Massachusetts, a vibrant slice of the larger Boston metropolitan area, known for its excellent universities, colleges and public education, its world renowned medical facilities, a dynamic modern economy, a booming artistic community, passionate sports fans and diverse cultures, all within a two hour drive to great skiing, hiking in the White, Green or Berkshire mountains, and many Atlantic Ocean beaches. As a joint collaboration between Smithsonian and Harvard, the CfA can also offer CfA Fellows selected special privileges through both institutions. Fellowship Programs CfA Fellowship - Not accepting applications at this time