what does burj khalifa mean
Burj Khalifa or Khalifa Tower (Arabic: Ø¨Ø±Ø¬ Ø®ÙÙÙØ©) is a very tall skyscraper in Dubai, United Arab Emirates and is the world's tallest building ever built, at 828m (2,717ft). Before the building opened, it was called Burj Dubai. The building is 160 storeys high. Construction of the tower was started in 2004. The building was officially opened on 4 January 2010. It is the tallest structure made by humans in the world. The building is more than 300 metres (980 ft) taller than Taipei 101.