Blue Hole (Big Pine Key)
The Blue Hole is an attraction on the island of Big Pine Key in the Florida Keys. It is an abandoned rock quarry that was used for nearby road fills and Henry Flagler's Overseas Railroad. The water it contains is mostly fresh and is used by various wildlife in the area, such as birds, snakes, alligators, key deer and green iguanas. It is part of the National Key Deer Refuge.
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.