Sarajevo is capital of Bosnia and Herzegovina, well known as a host of the 14th winter Olympic games in 1984, a multicultural city that grow up on the line of interaction between the orient and the west, preserving traces of all the empires and cultures that shifted with each other over the centuries. Assassination of Austrian Emperor Ferdinand by a Serbian terrorist in 1914 marked the start of the 1st world war.
Vrelo Bosne is a spring and beautifully green park at the source of the River Bosna, twelve kilometers southwest of Sarajevo in the suburb of Ilidža. If you don't have a car, it's best reached by taxi and can be combined with a visit to the War Tunnel Museum.