The Thomas Viaduct Obelisk is a historic landmark located in Elkridge, Maryland, United States of America. It is a tall obelisk made of white granite that stands near the Thomas Viaduct, a renowned historical bridge over the Patapsco River. The obelisk was erected in 1829 as a commemoration of the completion of the viaduct and was placed at the western end of the bridge. It serves as a symbol of the ingenuity and engineering marvel of the viaduct, which was the first stone masonry bridge in the United States to carry a railroad.
Visiting the Thomas Viaduct Obelisk provides a unique opportunity to admire and learn about the early American railroad history. Standing near the obelisk offers an excellent view of the Thomas Viaduct, allowing visitors to appreciate its architectural beauty and remarkable craftsmanship. Additionally, the surrounding area provides a scenic and peaceful environment, ideal for leisurely walks or picnics by the river.