The Key Largo Marina sits at Mile Marker 100 and has 77 slips for boat docking. Surrounding the marina, visitors can find restaurants, hotels, resorts, bed and breakfasts, and campgrounds. While riding around here, check out the iconic vessel, the African Queen. It is from the 1951 movie African Queen, starring Humphrey Bogart and Katherine Hepburn, and is located in Key Largo.