France is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. It is bordered (clockwise starting from the northeast) by Belgium, Luxembourg, Germany, Switzerland, Italy and Monaco; with Spain and Andorra to the south. France is linked to the United Kingdom by the Channel Tunnel, which passes underneath the English Channel. In addition to these borders on the European continent France has land borders with Suriname and Brazil through French Guiana, as well as with the Netherlands through the Collectivity of Saint Martin.