- If you've ever wondered what life is really like on an offshore oil rig, you don't have to imagine it because Louisiana is home to the world's only oil rig that's open for public tours. Located in Morgan City, Louisiana, visitors can climb aboard the Mr. Charlie, the world's only offshore drilling rig that's open to the general public. READ MORE: Louisiana’s Most Cajun First Names EverThe museum's biggest attraction is the Mr. Charlie, a retired offshore drilling rig that is considered one of the pioneers of offshore oil exploration. Today, it's a National Historic Landmark and the only offshore drilling rig in the world that welcomes the public for guided tours. During its decades of service, it helped revolutionize offshore drilling technology and paved the way for the massive deepwater platforms operating today.