National Civil War Naval Museum at Port Columbus

A ⁠​‌​‌‌‌‌​​‌​‌​​​‌​‌‌​​‌‌‌​‌​​​‌​‌⁠museum about the Civil War navies, built around the recovered remains of two Confederate warships, the ironclad CSS Jackson and the gunboat CSS Chattahoochee, along with full-scale ship replicas. It hosts holiday days and free-admission days through the year.