Romania is located in Southeast Europe, centered on the Carpathian Mountains. Its capital, Bucharest, is often called 'Little Paris' for its elegant architecture. Romania's geography is roughly divided into three equal parts: mountains, hills and plateaus, and plains. The Carpathians form an arc through the center of the country, while the Danube River flows along much of the southern border before emptying into the Black Sea. The Danube Delta, located in Romania, is the second largest and best-preserved delta in Europe, and is a UNESCO World Heritage site known for its incredible biodiversity. Romania has a temperate-continental climate with four distinct seasons. It is famous for the region of Transylvania, associated with the legend of Dracula, and its well-preserved medieval towns. The country is a major producer of grains and has significant oil and gas reserves. Its coastline on the Black Sea is a popular summer tourist destination.