Mitchel invited former President John Quincy Adams, who had advocated for a national observatory, to come to Cincinnati to lay the cornerstone. The 76-year-old took a 1,000-mile journey by canal ...

and the Cincinnati Observatory. (The Showboat Majestic was once included, but it has since been relocated to Greenup, Kentucky.) More: 'Cursed' Showboat Majestic now facing violations Which of ...