One of the many otherworldly monuments that dot the Bosnian landscape, the rocky passage of the Tjentiste War Memorial is a stunning tribute to a total failure. The two fractal walls of the memorial were erected in the 1970's to remember Operation Fall Schwarz, otherwise known as the Battle of the Sutjeska. The military action took place during World War II and saw Axis forces attempt to rout a group of Yugoslavian forces and capture their leader.