The Wagah border, often called the "Berlin wall of Asia", is a ceremonial border on India–Pakistan Border, where each evening, there is a retreat ceremony called 'lowering of the flags'. At that time there is a very energetic and thrilling parade by the Border Security Force (B.S.F), India and the Pakistan Rangers soldiers. It may appear slightly aggressive and even hostile to foreigners, but it really is just spectacular entertainment for the crowds with grandstands having been built on both sides. Troops of each country put on quite an entertaining show in their uniforms with their colorful turbans. Border officials from the two countries sometimes walk over to the offices on the other side for day to day affairs. The happenings at this border post have been a barometer of the India-Pakistan relations over the years.