It’s not the tallest building in Dallas, but it’s impossible to ignore the 561-foot tall Reunion Tower jutting straight up through the Dallas skyline. At night, the top of the tower glows with 259 LEDs, giving the tower its nickname: The Ball. Visitors know its much more than a bright light in the night: Reunion Tower has a 360 degree observation deck with the best views in Dallas and an epic restaurant on the 18th floor.