The sign at night for the new Lied Discovery Children’s Museum at the Smith Center for the Performing Arts building in Las Vegas on Dec. 26, 2012. (Jason Bean/Las Vegas Review-Journal) The …

The sign at night for the new Lied Discovery Children’s Museum at the Smith Center for the Performing Arts building in Las Vegas on Dec. 26, 2012. (Jason Bean/Las Vegas Review-Journal)

The sign at night for the new Lied Discovery Children’s Museum at the Smith Center for the Performing Arts building in Las Vegas on Dec. 26, 2012. (Jason Bean/Las Vegas Review-Journal)