Where was World War 1 battle site near Belgian border?

One of the most significant World War I battle sites near the Belgian border is Ypres, located in Belgium. The Battles of Ypres, including the First, Second, and Third Battles, took place from 1914 to 1918 and were pivotal in the Western Front campaign. The area is also known for the use of chemical warfare and has numerous memorials and cemeteries commemorating the fallen soldiers.