Dominica is an island nation and borderless country in the Caribbean Sea, the northernmost of the Windward Islands. The size of the country is about 289.5 square miles (754 km²). The capital is Roseau.

Dominica is largely covered by rainforest and is home to the world's second-largest boiling lake. Dominica has many waterfalls, springs, and rivers. Some plants and animals thought to be extinct on surrounding islands can still be found in Dominica's forests. The volcanic nature of the island and the lack of sandy beaches have made Dominica a popular scuba diving spot. Dominica is home to several protected areas, including Cabrits National Park. Dominica has 365 rivers.

It is said that when his royal sponsors asked Christopher Columbus to describe this island in the "New World", he crumpled a piece of parchment roughly and threw it on the table. This, Columbus explained, is what Dominica looks like—completely covered with mountains with nary a flat spot.

Morne Trois Pitons National Park is a tropical forest blended with scenic volcanic features.[1] It was recognized as a World Heritage Site on April 4, 1995. Within the Caribbean, it shares this distinction with historic World Heritage sites in San Juan (Puerto Rico), Willemstad (Curacao), Saint Kitts, Hispaniola (Dominican Republic/Haiti) and Cuba, and another natural World Heritage site in St. Lucia.

The Commonwealth of Dominica is engaged in a long-running dispute with Venezuela over Venezuela's territorial claims to the sea surrounding Isla Aves (literally Bird Island, but in fact called Bird Rock by Dominica authorities), a tiny islet located 70 miles (110 km) west of the island of Dominica.

The only two major cities are Roseau and Portsmouth.