The Baltimore-Washington Parkway is a major highway in the United States that connects the cities of Baltimore and Washington, D.C.. It spans approximately 30 miles and serves as a vital route for commuters and travelers in the Maryland area. The parkway is maintained by the National Park Service and features scenic views, making it a pleasant drive. Constructed in the 1950s, the parkway was designed to facilitate traffic while preserving the natural landscape. It includes several interchanges and access points to local roads, providing convenient access to nearby attractions, including Greenbelt Park and Fort Meade.