The tallest building in the world is the Burj Khalifa, located in Dubai, United Arab Emirates. The Burj Khalifa is 829.8 meters tall (2,717 feet 6 inches) and holds several world records, including:

* Tallest existing structure (previously KVLY-TV mast)
* Tallest freestanding structure (previously CN Tower)
* Most elevators in a single building (previously World Trade Center)

Construction of the Burj Khalifa began on January 12, 2004 and was completed in 2010.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence