<page_title> List of tallest buildings and structures </page_title> <section_title> Tallest structures, freestanding structures, and buildings </section_title> <table> <cell> Willis Tower, Chicago, United States <col_header> Name and location </col_header> <col_header> Structures (supported) Main article: List of tallest structures </col_header> <col_header> Structures (media supported) </col_header> <col_header> Freestanding structures Main article: List of tallest freestanding structures </col_header> </cell> <cell> 527 <col_header> Architectural top (metres) </col_header> <col_header> Structures (supported) Main article: List of tallest structures </col_header> <col_header> Structures (media supported) </col_header> <col_header> Freestanding structures Main article: List of tallest freestanding structures </col_header> </cell> <cell> 1,729 <col_header> Architectural top (feet) </col_header> <col_header> Structures (supported) Main article: List of tallest structures </col_header> <col_header> Structures (media supported) </col_header> <col_header> Freestanding structures Main article: List of tallest freestanding structures </col_header> </cell> <cell> Burj Khalifa, Dubai, United Arab Emirates <col_header> Name and location </col_header> <col_header> Structures (supported) Main article: List of tallest structures </col_header> <col_header> Structures (media supported) </col_header> <col_header> Freestanding structures Main article: List of tallest freestanding structures </col_header> <col_header> Buildings Main article: List of tallest buildings in the world </col_header> </cell> </table>
Before Burj Khalifa was completed, Willis Tower led in the height-to-tip category with 1,729 feet (527 meters).