Tisha Be'Av signifies the end of three weeks of mourning. Considered the saddest day of the year, many sit on the ground in discomfort to recall the destruction of the Temples.RELATED:Video: Jews mourn lost temples at the KotelThroughout Israel, restaurants, bars and places of entertainment were closed on the eve of Tisha Be'av and the following day. According to a 1997 law passed by the Knesset, those that are open are subject to fines.The book of Eicha (Lamentations) was read during the evening at the Kotel. This gallery showcases photographs of thousands of mourners in Jerusalem's Old City, young and old alike.