The Serbian Orthodox church of the Holy Trinity was built in the 1930s as was the city's municipal assembly building which you can see behind it. During the second world war the church was first bombed and then razed by the Ustashas, the Croatian pro-Nazi quisling regime. The second card was posted in 1955 and you can see that it was taken from almost exactly the same place. The legend on the arch with the communist star built across the road reads: "Long Live the Central Committee of the Communist Party of Yugoslavia headed by Comrade Tito."
In 1992, at the beginning of the Bosnian war Banja Luka immediately fell under Serb control and all of its mosques were blown up. Most of them have now been rebuilt except for the historic Ferhadija mosque, which was built in 1579 and blown up in 1993.
Today, Banja Luka is the capital of the Republika Srpska, the Serb part of Bosnia. It is also the country's second biggest city.
Soon after the war in began in 1992 the Serbian authorities ordered that the Church of the Holy Trinity be rebuilt.