Two free admissions to the Lost River Cave & Valley in Bowling Green, Kentucky.  Your tour begins with a leisurely stroll in the valley as your guide shares the tale of the blue hole and disappearing Civil War soldiers.  When you arrive at the massive cave entrance, prepare to board Kentucky's only underground boat tour.  Duck your head for just a moment as you glide under the famous wishing rock.  Feel free to touch the cool limestone ceiling before the passage opens into an enormous cathedral-like cavern.