Be they from purple mountains, fruited plains, or anywhere else, just about all your visitors will appreciate the shining turquoise sea visible from this southern point of Key Biscayne. The only edifice obstructing the splendid ocean view is the restored Cape Florida lighthouse, erected in 1825 by some of our first out-of-towners, including a builder from Boston. It was burned down by some churlish locals from the Seminole tribe in 1836 and rebuilt ten years later. When your guests tire of the tower and beach facilities (which include picnic areas with pavilions and barbecue grills), take them along the sea wall path for a gander at old Stiltsville, which dates back to the late Thirties. The seven aquatic getaway cabins hovering above the Biscayne Channel have withstood Hurricane Andrew and blowhards at Biscayne National Park, who are pushing for removal of the stilt houses because they lie inside the park's boundary. Turning your gaze inland, you might have the fortune of showing your nonaccidental tourists a crocodile that resides in the restored tidal marsh, along with various bird species. As you inhale the sea breeze, you also can breathe a sigh of relief while telling your friends of the battle, led by former Miami News editor Bill Baggs in 1966, that prevented Cape Florida from becoming a vast burg of condominiums.