Background information Baltimore Baltimore is a city of northern Maryland on an arm of Chesapeake Bay northeast of Washington, DC. It has been a busy port since the 18th century. A city on the move with new attractions. Baltimore is an exciting city with charming neighborhoods, ethnic and cultural diversity, and a wealth of history.Background information Baltimore Baltimore is a city of northern Maryland on an arm of Chesapeake Bay northeast of Washington, DC. It has been a busy port since the 18th century. A city on the move with new attractions, Baltimore is an exciting city with charming neighborhoods, ethnic and cultural diversity, and a wealth of history