A Christmas tree is a decorated tree, usually an evergreen conifer, such as a spruce, pine, or fir, or an artificial tree of similar appearance, associated with the celebration of Christmas, originating in Germany associated with Saint Boniface. The custom was developed in medieval Livonia (present-day Estonia and Latvia), and in early modern Germany where German Protestant Christians brought decorated trees into their homes. It acquired popularity beyond the Lutheran areas of Germany and the Baltic governorates during the second half of the 19th century, at first among the upper classes.