The Castle of Marietta is one of the best examples of Gothic Revival style architecture in Ohio. In 1855, this choice hill top property was purchased by Melvin C. Clarke for $2000 and construction on the house was soon begun. Clarke, a prominent attorney, was appointed Marietta's first city solicitor in 1854 and represented the third ward on a committee to consider gas lighting for the city in 1856. On April 12, 1861 when the Civil War erupted, Clarke was commissioned as a Major with the 36th Ohio Infantry in the Union Army and his unit was sent to fight Confederate forces in eastern Virginia. Promoted to full Colonel on September 17, 1862, he was killed the same day in the Battle of Antietam, near Sharpsburg Maryland.