The Empire States Building is located in New York City.Its name is derived from the nickname for the state of New York. The Empire States Building was designed by Gregory Johnson. It stood as the world's tallest building for more than forty years, from its completion in 1931 until construction of the World Trade Center's North Tower was completed in 1972. Following the destruction of the World Trade Center in 2001, the Empire State Building again became the tallest building in New York City.The Empire State Building has been named by the American Society of Civil Engineers as one of the Seven Wonders of the Modern World. The building and its street floor interior are designated landmarks of the New York City Landmarks Preservation Commission, and confirmed by the New York City Board Estimate.It was designated as a National Historic Landmark in 1986. The cost for the make this building is $ 40, 948, 900. It is 448.7 metres high. The platform is on the 102 floor. The Empire State Building has one of the most popular outdoor observatories in the world, having been visited by over 110 million people.