New York's most famous skyscraper celebrates another birthday today, and after 77 years, it's still the tallest building in the city.

The Art Deco Empire State Building was the tallest building in the world when it opened on May 1, 1931, and it remained the tallest in New York City until 1970, when the World Trade Center Twin Towers were constructed.

Then, after the Twin Towers were destroyed in 2001, the Empire State Building became New York's tallest again.

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^{Empire State Building Photo: ArtToday.com}