What’s 50 stories high and has a three-level spherical dome with 260 flashing lights? No, it’s not a spaceship, it’s Reunion Tower, the unofficial symbol of Dallas. Get a workout by taking the steps up to the observation deck, or enjoy the sky-high panoramic view from the stunning celebrity-chef restaurant and lounge Five Sixty by Wolfgang Puck . An underground pedestrian tunnel connects Reunion Tower with Union Station.