The J. Parker is a 13th-story rooftop restaurant and lounge renowned for its panoramic, unobstructed views of the Chicago skyline, Lincoln Park, and Lake Michigan. Its significance lies in this unmatched vantage point, its historical namesake, and its year-round appeal. [1, 2, 3, 4, 5] Why It's Significant The Name: The bar is named after John Frederick Parker, the notoriously unreliable police officer assigned to guard President Abraham Lincoln the night of his assassination at Ford's Theatre.