Suriname lies on the northeast coast of South America , with Guyana to the west, French Guyana to the east and Brazil to the south. Area: 63,250 sq.ml. (=163.820 sq.km). The principal rivers are the Corantijn river on the Guyana border, the Marowijne river on the French Guyana border, and in the middle the Suriname river on which the capital city of Paramaribo (also the largest city) with its 120,000 inhabitants is situated. The Tumuc Humac mountains are on the south border with Brazil.