The Martinsburg Roundhouse is a historic railroad facility located in Martinsburg, West Virginia. Built in the mid-19th century, it served as a key maintenance and repair hub for steam locomotives. The roundhouse features a circular design with multiple tracks radiating from a central turntable, allowing trains to be serviced efficiently. Today, the Martinsburg Roundhouse is recognized for its architectural significance and historical importance in the development of the Baltimore and Ohio Railroad. It has been preserved as a site for education and tourism, showcasing the rich history of rail transportation in the region.