Perhaps the most recognizable contributions of the Stalinist period are the so-called Seven Sisters, seven massive skyscrapers scattered throughout the city at about an equal distance from the Kremlin. A defining feature of Moscow's skyline, their imposing form was allegedly inspired by the Manhattan Municipal Building in New York City, and their style—with intricate exteriors and a large central spire—has been described as Stalinist Gothic architecture. All seven towers can be seen from most high points in the city; they are among the tallest constructions in central Moscow apart from the Ostankino Tower, which, when it was completed in 1967, was the highest free-standing land structure in the world and today remains the world's seventy-second tallest, ranking among buildings such as the Burj Khalifa in Dubai, Taipei 101 in Taiwan and the CN Tower in Toronto.