The county of Helsinki forms the core of Finland's largest urban area, known in Finnish as the "capital area" (pääkaupunkiseutu). The Gulf of Finland lies to the south, while the posh suburban municipality of Espoo, with the embedded tiny enclave of Kauniainen, is to the west. The more industrialized municipality of Vantaa is to the north. Beyond these three, the suburbs rapidly give way to farms and forests, most notably Nuuksio National Park at the intersection of Espoo, Vihti and Kirkkonummi.
Within Helsinki itself, the city center is on the southern peninsula at the end of the city's main thoroughfare Mannerheimintie (or just Mansku). Both the central railway station and the main bus terminal are in the city center. Shopping streets Aleksanterinkatu (or Aleksi for short) and Esplanadi (or Espa) connect to Senate Square (Senaatintori), the historical center of the city. See the Helsinki Guide Map for an interactive searchable map of the city.