Cyre is a fictional location in the Eberron campaign setting for the Dungeons & Dragons role-playing game. It was once a prosperous nation known for its advanced technology and magical innovations, particularly in the fields of transportation and communication. The nation was home to the Warforged, a race of living constructs created for war. The nation of Cyre was tragically destroyed during the Last War, a devastating conflict that reshaped the political landscape of Eberron. The cataclysmic event known as the Day of Mourning resulted in a mysterious fog that enveloped the land, leaving it a barren wasteland. Today, Cyre is often referred to as the Mournland, a place filled with danger and magical anomalies.