Enjoy the Indianapolis Children’s Choir at 11 a.m. then gather on the museum’s front lawn to witness Santa and Mrs. Claus’ arrival by helicopter. Once safely on the ground, they will greet the crowd and move to their home in Celebration Crossing. The day’s festivities include the unveiling of the 92 County ornament tree. Children of all ages can ride the Santa Claus Express train, pose for a picture with Santa and give him their holiday wish list before he leaves again on Dec. 24.