Belgrade is the capital and largest city of Serbia. It's located at the confluence of the Sava and Danube rivers, where the Pannonian Plain meets the Balkans. Its name translates to "White city". The urban area of the City of Belgrade has a population of 1.23 million, while over 1.65 million people live within its administrative limits. Its metropolitan territory is divided into 17 municipalities, each with its own local council. Belgrade is classified as a Beta- Global City.

One of the most important prehistoric cultures of Europe, the Vinča culture, evolved within the Belgrade area in the 6th millennium BC. In antiquity, Thraco-Dacians inhabited the region, and after 279 BC Celts conquered the city, naming it Singidūn.

In 1521, Belgrade was conquered by the Ottoman Empire and became the seat of the Sanjak of Smederevo. It frequently passed from Ottoman to Habsburg rule, which saw the destruction of most of the city during the Austro-Ottoman wars. Belgrade was again named the capital of Serbia in 1841. Northern Belgrade remained the southernmost Habsburg post until 1918, when the city was reunited. As a strategic location, the city was battled over in 115 wars and razed 44 times. Belgrade was the capital of Yugoslavia from its creation in 1918.

During the post-war period, Belgrade grew rapidly as the capital of the renewed Yugoslavia, developing as a major industrial center. In 1948, construction of New Belgrade started. In 1958, Belgrade's first television station began broadcasting. In 1961, the conference of Non-Aligned Countries was held in Belgrade under Tito's chairmanship. In 1962, Belgrade Nikola Tesla Airport was built.

Belgrade hosts many annual international cultural events, including the Film Festival, Theatre Festival, Summer Festival, Music Festival, Book Fair, Eurovision Song Contest 2008, and the Beer Fest. The Nobel Prize winning author Ivo Andrić wrote his most famous work, The Bridge on the Drina, in Belgrade.Other prominent Belgrade authors include Branislav Nušić, Miloš Crnjanski, Borislav Pekić, Milorad Pavić and Meša Selimović.

Most of Serbia's film industry is based in Belgrade. FEST is an annual film festival that held since 1971, and, through 2013, had been attended by four million people and had presented almost 4,000 films.

The city was one of the main centers of the Yugoslav new wave in the 1980s: VIS Idoli, Ekatarina Velika, Šarlo Akrobata and Električni Orgazam were all from Belgrade. Other notable Belgrade rock acts include Riblja Čorba, Bajaga i Instruktori and Partibrejkers.

There are many foreign cultural institutions in Belgrade, including the Spanish Instituto Cervantes, the German Goethe-Institut and the French Institut français, which are all located in the central pedestrian area of Knez Mihailova Street. Other cultural centers in Belgrade are American Corner, Austrian Cultural Forum, British Council, Chinese Confucius Institute, Canadian Cultural Center, Hellenic Foundation for Culture, Italian Istituto Italiano di Cultura, Iranian Culture Center, Azerbaijani Culture Center and Russian Center for Science and Culture. European Union National Institutes for Culture operates a cluster of cultural centres from the EU.

Belgrade has a reputation for offering a vibrant nightlife; many clubs that are open until dawn can be found throughout the city. The most recognizable nightlife features of Belgrade are the barges (splav), spread along the banks of the Sava and Danube Rivers. Many weekend visitors prefer Belgrade nightlife to that of their own capitals, due to a perceived friendly atmosphere, plentiful clubs and bars, cheap drinks, the lack of language difficulties, and the lack of restrictive night life regulation.

The city is home to Serbia's two biggest and most successful football clubs, Red Star Belgrade and Partizan Belgrade. Red Star won the 1991 UEFA Champions League (European Cup). The two major stadiums in Belgrade are the Marakana (Red Star Stadium) and the Partizan Stadium. The rivalry between Red Star and Partizan is one of the fiercest in world football.

Plitvice Lakes National Park is one of the oldest national parks in Southeast Europe and the largest national park in Croatia. The national park is world-famous for its lakes arranged in cascades, and 16 lakes can be seen from the surface.

The national park was founded in 1949 and is situated in the mountainous karst area of central Croatia.

The Plitvice Lakes originate in the south of the park area at the confluence of Bijela Rijeka (English White River) and Crna Rijeka (English Black River). These rivers originate south of the municipality of Plitvički Ljeskovac and unite at one of the bridges in this village.

In 1979, Plitvice Lakes National Park was added to the UNESCO World Heritage register.

The protected area extends over 296.85 square kilometres (73,350 acres). About 90% of this area is part of Lika-Senj County, while the remaining 10% is part of Karlovac County. The lakes are separated into an upper and lower cluster formed by runoff from the mountains, descending from an altitude of 636 to 503 m (2,087 to 1,650 ft) over a distance of some eight km, aligned in a south-north direction. The lakes collectively cover an area of about two square kilometres (0.77 square miles), with the water exiting from the lowest lake forming the Korana River.

The name Plitvice was first mentioned in a written document in 1777 by Dominik Vukasović, the priest of Otočac. This name was designated due to natural phenomena that have created the lakes. Nature formed shallow basins (Croatian pličina or plitvak, plitko means shallow), which have been filled with water. For centuries, water has changed the limestone and thus the landscape of this area.

The overall water body area of the national park is about 2 km2 (0.77 sq mi). The two largest lakes, Prošćansko jezero and Kozjak, cover about 80 percent of the overall water body area. These lakes are also the deepest, with a depth of 37 and 47 metres (121 and 154 ft) respectively. On Lake Kozjak, low-noise and ecologically-friendly electric boats are being used. None of the other lakes in the park exceeds 25 metres (82 feet) in depth. The altitude drop from the first lake to the last is 133 metres (436 feet).

The 16 lakes that can be seen from the surface are grouped into the 12 Upper Lakes (Gornja jezera) and the four Lower Lakes (Donja jezera).

The Plitvice Lakes national park is heavily forested, mainly with beech, spruce, and fir trees, and features a mixture of Alpine and Mediterranean vegetation. It has a notably wide variety of plant communities, due to its range of microclimates, differing soils and varying levels of altitude.

Scientists have so far listed 1,267 different plants out of 109 species that can be found within the area of the national park. 75 plants are endemic, which means that they have first been defined and classified in this area of the world or not far from it.

For reasons of the poor industrial development of this region and early introduced protection measures, a nearly untouched landscape has been preserved. In the partially primeval beech and fir forests various rare species, such as the brown bear have survived. At the Plitvice Lakes, all species continue to exist that have already existed before the coming of man. This is a rare case worldwide.