Ypres, Belgium (also known as Ieper) was reduced to rubble during the three Battles of Ypres, which took place from 1914 to 1917 and spanned nearly the entire length of World War I. This made Ypres famous for all the wrong reasons. It was the site of the first use of mustard gas and chemical warfare attacks, but it was also where the famous Christmas Truce in December 1914 occurred. Today, with its historic town square meticulously rebuilt, Ypres is a moving monument to its past, its near total destruction, and its remarkable revival as a major city of influence and tourism.