The State of Maryland is a state in the Mid-Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to its east. The state's largest city is Baltimore, and its capital is Annapolis. Maryland has a diverse economy with strong sectors in biotechnology, manufacturing, and services. The state is also home to several major military installations and federal agencies, including the National Security Agency and the Food and Drug Administration.