Arlington is a vibrant city located in Northern Virginia, directly across the Potomac River from Washington, D.C. It is often considered part of the Washington metropolitan area. Despite its urban feel, Arlington is not an incorporated city in the traditional sense; it is a county with a consolidated city-county government, meaning the county and city functions are merged. Known for its strong economy, Arlington is home to numerous government agencies, including the Pentagon and the DEA, as well as many corporate headquarters, most notably Amazon's HQ2 in National Landing. The city boasts excellent public transportation options, including multiple Metro lines, making it highly accessible. Arlington is characterized by its diverse neighborhoods, ranging from bustling urban centers like Clarendon and Ballston to more residential areas. It offers a high quality of life with abundant parks, cultural attractions, and a strong job market. The city is also recognized for its top-rated public school system and a highly educated populace. Its close proximity to the nation's capital provides residents with unparalleled access to historical sites, museums, and national events.