Martinique island | caribbean travel guide, Photographic, travel and holiday guide to the island of martinique in the caribbean from paradise islands. The biggest caribbean islands - travel tips - usa today, Hispaniola is the second largest caribbean island, and it is home to two different countries. the dominican republic (godominicanrepublic.com) is the larger of this. Dominican republic, caribbean island dominican republic, Currency: the official currency of the dominican republic is the dominican peso (rd$). telecommunications: calling code: 1 (809) top level domain: (.do).