A monumental sculpture made from a Twin Towers girder has been unveiled in Queen Elizabeth Olympic Park.

The sober reminder of the atrocities, entitled Since 9/11, is 28ft-tall, weighs four-tonnes and was created by New York artist Miya Ando.

It was gifted to the UK by the Port Authority of New York and New Jersey in 2010, one of only six pieces of World Trade Centre steel to be sent around the world, on the condition that it be permanently sited in a prominent London location.

It was first unveiled in Battersea Park in 2011, but removed less than a month later, and UK-based educational charity SINCE 9/11, which commissioned the artwork, has been looking for the right home ever since.

This week Boris Johnson unveiled the sculpture that honours the nearly 3,000 people including 67 Britons who died in the terror attack.

He said: “This pertinent reminder of the 9/11 atrocities is a tremendous new addition to the park that encapsulated the spirit of hope, and tolerance during our Olympic Games. Nearly 14 years may have passed but this prodigious art work will generate continued interest, discussion and memories in the thousands of visitors to its landmark new home.“

The US Ambassador to the UK, Matthew Barzun, said: “This artwork is a beacon for the charity’s focus on hope, tolerance and understanding.“