Maryland markers commemorate the earliest trails west, the building of the turnpikes and the National Road, and the birth of the interstate highway system. Markers also note the state's bridges, lighthouses, canals, railways, steamships and the oldest continuously operated airport in the world. Take an "on-line tour" of a sample of markers relating to travel and transportation in Maryland, chosen to reflect geographic range and variety. Use the database search on the "Explore the Historical Markers" page to locate other similar markers and to explore this theme in more depth.
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About the Historical Markers Web Site
administered by the Maryland State Highway Administration, supported data development for this project.