Leprechauns (or leprecauns or lepracauns) are figures in Irish folklore who guard a hidden treasure. They are thought of as small and incredibly agile male fairies or goblins, most often hiding a pot of gold. They live lonely lives, and leprechauns can be a source of mischief for the unwary, and are infamous for being difficult to catch or hunt. Even if they are captured, the captor must always have them in sight, or they will not reveal the location of the treasure. Leprechauns share many characteristics with other ancient creatures from Irish Celtic mythology and wider Europe, but since the 19th century CE they have risen to dominance as the most recognizable symbol of Irish folklore.