10/26/2018 - Put on your costume and join Historic Columbia as we bring the fun of Halloween to the Robert Mills House during Trunk or Treat! Children will enjoy trick-or-treating with a twist in a safe and fun environment. Community members and organizations will display decorated trunks filled with candy in the parking lot of the Robert Mills House. Awards and prizes for best costumes and best decorated trunk will be given at 6:45 p.m.