Bermuda (fully, The Bermuda Islands, alias The Somers Isles) is an overseas territory of the United Kingdom in the North Atlantic Ocean, situated around 600 miles (975 km) off the coast of the United States. Although commonly referred to in the singular, it consists of around 138 islands, of total area 58.8 square kilometres (27.7 sq. mi). Compiling a list of these islands is often complicated, as many have more than one name (as does the entire archipelago, which, in addition to its two official names, has historically been known as La Garza, Virgineola, and the Isle of Devils). Despite the limited land mass, there has also been a tendency for place names to be repeated (there are two Long Islands, for instance, and two Long Bays, and St. George's town is located on the island of the same name, within the parish also called St. George's). The largest island, Main Island (also called Bermuda, or Great Bermuda), is the location of the capital, the City of Hamilton (which is in Pembroke Parish, and is often confused with Hamilton Parish). Bermuda has a thriving economy, with a large financial sector and tourism industry.