Buried within Westminster Abbey is the Tomb of the Unknown Warrior, this grave contains the body of an unknown British soldier from the First World War.

While many famous figures are buried in Westminster Abbey, the most prominent grave situated in the middle of the nave—where it is impossible to miss—is the Grave of the Unknown Warrior. This grave contains the remains of an unidentified British soldier brought back from France after World War I. He was buried on November 11, 1920, to represent all the soldiers who died without a known grave. It is the only grave in the Abbey over which it is strictly forbidden to walk; even the royal family must walk around it during weddings and coronations. The grave is covered with a black Belgian marble stone and surrounded by red poppies. Other notable figures like Isaac Newton, Charles Darwin, and Stephen Hawking are buried nearby in the "Scientists' Corner," but the Unknown Warrior occupies the most sacred and central position in the floor of the nave as a symbol of national mourning and respect.