what is the tallest building ?
Burj Khalifa in Dubai, United Arab Emirates is the tallest building in the world. Shanghai Tower in Shanghai, China is the 2nd tallest building in the world. The Abraj Al-Bait Towers in Mecca, Saudi Arabia, is the tallest hotel, and the 3rd tallest building in the world.
9. & 10. The Petronas Towers 1 and 2 held the record as the tallest buildings in the world from 1998 to 2004 and remain the tallest twin towers in the world. These two buildings, completed on January 1, 1996, are the landmarks of Kuala Lumpur in Malaysia.