Miami is a cosmopolitan and exciting city that is world famous for its vibrant nightlife, stunning beaches and beautiful people. It is also within easy driving distance to surreal swamps, abundant wildlife and many lovely tropical islands and keys. The following are a few excellent day trips from Miami that visitors might enjoy. Grand Bahama Grand Bahama is the northernmost of the islands of the Bahamas, lying 56 miles off Florida. Travelers who want to check out Grand Bahama can hop aboard a three-hour cruise from Miami to this beautiful Caribbean island. Once there, visitors can spend the day exploring Freeport, which is the second largest city on the island.…