The Burj Khalifa is a 2,717-foot (828-meter) megatall skyscraper in Dubai. It has been the tallest building in the world since 2010.
10 years after people: Due to power being long gone the window buckets have not washed the Burj Khalifa's façade in a decade, leaving the exterior of the building looking dirty from collecting wind-blown sand. Due to corrosion, one of the Burj Khalifa's window-washing buckets falls from the building.
250 years after people: Over two centuries of corrosion and sandstorms have shredded the Burj Khalifa's exterior. The columns of the building's bottom have corroded more than its top due to closer proximity to saltwater. Finally, a sandstorm blows in. The building's bottom columns fail and the Burj Khalifa collapses.