One of the pivotal figures in Ohio's 1803 move to statehood was former Virginian Thomas Worthington. At the time, he lived in a log cabin outside of Chillicothe but within a few years, that cabin was replaced with an impressive stone structure that Worthington named Adena. He was one of Ohio's first pair of U.S. senators, served in the Ohio General Assembly, and was the state's sixth governor.
There is a visitor center and museum with a parking lot on one side and a path to the mansion and other buildings on the other. Today the mansion looks much as it did around 1818 when its owner was governor. Legend has it that it was this view of Mount Logan and the Scioto River that inspired the Great Seal of Ohio.