The Race to the Sea would reach its conclusion at the small Belgian town of Ypres. Ypres would become one of the bloodiest areas for the British and Germans over the 4 years of the war but in 1914 it was just a Belgian town where they met on the road north from the Aisne to the sea. The British Army, with their French allies, would march into Ypres where they would be tested almost to their breaking point.
The History of the Great war is now available on Stitcher
Battle around Langemarck
A map of the Second Battle of Ypres in 1915. It does however do a good job of showing the primary points of interest discussed in this episode