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The new National Children's Hospital has been steeped in controversy as costs for the new project spiral towards a staggering €2billion.

Tom Costello, the chair of the National Paediatric Hospital Development Board, stepped down from his position on Saturday as the row over escalating costs rages on.

Dublin Live takes a look at well-known landmarks that have cost less than the new national health facility.

The Burj Khalifa, Dubai - €1.31million

(Image: GIUSEPPE CACACE/AFP/Getty Images)

The Burj Khalifa is the tallest building in the world standing at 828metres tall.

It was opened in 2010, after construction finished in 2008, and was designed by the same firm that crafted the new One World Trade Centre in New York.

The Shard, London, England - €497million

(Image: Carl Court/Getty Images)

London's tallest building The Shard was built for a fraction of the estimated cost of the new children's hospital.

The 95-story sky scraper was built in 2012 and is the tallest building in the European Union... for now.

Taipei 101, Taiwan - €1.65billion

(Image: Getty)

When built in 2004, Taipei 101 in Taiwan's capital city was the tallest building in the world.

The 100 floors plus building towers over the Taipei skyline, and is the largest green building in the world.

Shanghai Tower, China - €2billion

(Image: JOHANNES EISELE/AFP/Getty Images)

Although the children's hospital may not come to the same price, the stunning Shanghai Tower - the world's second tallest building - was completed in 2014 at a cost of €2billion.

The 632metre structure shares the record for the highest observation deck and has the second fastest elevators which travels at 74km/h.

The Petronas Towers, Kuala Lumpur, Malaysia - €1.4billion

(Image: ED JONES/AFP/Getty Images)

The Petronas Twin Towers were the tallest buildings in the world between 1998 and 2004.

It only took three years to complete the two skyscrapers which remain the world's tallest twin towers.