History of the world’s tallest skyscrapers

The World Trade Center was once the tallest building on the planet. Continuing our series marking the 20th anniversary of 9/11, we look at its place in the history of the world’s tallest skyscrapers.
Park Row Building, New York City, USA (1899)
At the beginning of the century, the 119-metre-tall Park Row Building in New York City was the world's tallest skyscraper, a title that would remain in the city until 1974, when the Sears Tower completed in Chicago.
Originally an office block for 4,