The Tour Montparnasse is Paris's tallest skyscraper and its most controversial building β a 210-meter glass-and-steel tower completed in 1973 that so shocked Parisians with its incongruous presence on the city's skyline that it prompted the city to ban further high-rise construction in central Paris, making it the last major tower built within the capital's historic core. Despite its contentious aesthetics, the Tour Montparnasse offers what many consider the best panoramic view of Paris available β from its 56th-floor observation deck and open-air rooftop terrace, visitors can see the entire city spread below in 360 degrees, including, crucially, the Eiffel Tower in all its glory β a view impossible from the tower itself, which can be seen from the Trocadero but not from its own summit. The view encompasses all of the great monuments of Paris β Notre-Dame, the Sacre-Coeur, the Louvre, the Grand Palais, the Arc de Triomphe β laid out across the city's gentle topography with the Seine winding through the center, and on clear days extends to the hills of Montmartre to the north, the Bois de Boulogne to the west, and the distant suburbs of the Ile-de-France. The tower also houses a popular bar and restaurant on its upper floors, making it a destination for dining with exceptional views, and its fast elevators reach the observation deck in just 38 seconds, making the transition from street level to the Paris skyline almost instantaneous.