The new world's tallest building opens officially on Monday in Dubai with 160 storeys and 828 meters high.

The tower has been named the Burj Khalifa after the ruler of the emirate of Abu Dhabi, whose bailout helped Dubai's biggest developer avoid a potentially disastrous debt default in November.

The building's owners say more than 90 per cent of space has been sold. It boasts four swimming pools, a private library and a hotel.

The tower and surrounding development has cost about $22 billion to build.

The

The skyline of Dubai shows the Burj Dubai Tower, the tallest tower in the world January 4, 2010. Started at the height of the economic boom and built by some 12,000 labourers, the world's tallest building will open today in Dubai as the glitzy emirate seeks to rekindle optimism after its financial crisis. REUTERS/Ahmed Jadallah
The

The Burj Khalifa tower was seen on a firewoks display.