The city of Reykjavík is mostly located on the Seltjarnarnes peninsula, but the suburbs reach far out to the south and east. Reykjavík is a spread-out city: most of its urban area consists of low-density suburbs, and houses are usually widely spaced. The outer residential neighbourhoods are also widely spaced from each other; in between them are the main traffic arteries and a lot of empty space. The city's latitude is 64°08' N, making it the world's northernmost capital of a sovereign state (Nuuk, the capital of Greenland, is slightly further north at 64°10' (about 80 km) but Greenland is a constituent country, not an independent state).