Halloween is a holiday that originated from the Celtic festival of Samhain celebrating the day of the souls. On Halloween, people dress up in costumes and go trick-or-treating, visit haunted attractions, and watch scary movies. Traditional activities include trick-or-treating, telling scary stories, and carving jack-o'-lanterns from gourds. In Mexico, Dia de las Almas is celebrated by preparing food offerings and altars for deceased loved ones and visiting cemeteries to pray.