Blue Hole (Castalia)
The Blue Hole is a fresh water pond located in Castalia, Erie County, Ohio, in the United States. From the 1920s to 1990 the Blue Hole was a tourist site, attracting 165,000 visitors annually at the height of its popularity, partly because of its location on State Route 269, about southwest of the Cedar Point amusement park in Sandusky, Ohio.
The Blue Horizon
The Blue Horizon is a historic 1,346-seat former boxing venue in Philadelphia. "The Ring" magazine voted it the number-one boxing venue in the world, and "Sports Illustrated" noted it as the last great boxing venue in the country.