Union City, Tenn.–The “Let it Glow” Walk-Thru and Drive-Thru experiences are back at Discovery Park with even more lights and decorations this year. Both light shows are open from 5-9 p.m. until Saturday, Dec. 30. Both are closed on Thanksgiving, Christmas Eve and Christmas Day. The drive-thru is $10 per car and the walk-thru is $5 per person (FREE for 3 and under). Bring the kids on a weekend night to see Santa Claus.