Sarajevo roses: a design made of red resin poured into the scars left in asphalt or concrete from a mortar or other explosive device. They are found in the streets of Sarajevo, the capital of Bosnia, from the siege that took place in the early 90s.
During the Siege of Sarajevo, an estimated 11,000 civilians were killed, including 1500 children. The city was barricaded and snipers set up shop. The conflict was driven by the instability of Yugoslavia post WWII and the declaration of independence by many of it's provinces (Croatia, Slovenia, Bosnia and Herzegovina). It was the Bosnian sovereignty that set the Serbs to mount an attack. Although the conflict began in 1992, the conflict wasn't fully resolved until 1996.