The capital of the Dominican Republic is Santo Domingo with a population of  2.25 million. The second largest city is Santiago de los Caballeros with 908,230 habitants. The country is mountainous with a maritime tropical climate. Almost 10 million people are leaving in the country. The official language is Spanish and 95% of the population is Roman Catholic. The official currency is the RD$ peso (1 US$ ~ 33 Pesos).