Is the new World Trade Center tallest building in world?

The new World Trade Center, also known as One World Trade Center, is the tallest building in the Western Hemisphere and the tallest structural steel-built building in the world, but not the tallest overall. The Burj Khalifa in Dubai, UAE, holds the title for the world's tallest building, standing at 829.8 meters. One World Trade Center stands at 541.3 meters tall.