Marietta, Ohio, is a historic city located at the confluence of the Ohio River and the Muskingum River. Founded in 1788, it is one of the oldest settlements in the Northwest Territory. The city is known for its rich history, including its role in the early westward expansion of the United States. The city features several historic sites, such as the Mound Cemetery, which contains burial mounds built by ancient Native American cultures. Marietta also hosts the Marietta College, established in 1835, which contributes to the local culture and economy. The scenic riverside location offers recreational activities like boating and fishing.