Pupils from 10 schools joined forces to build a replica Neolithic chalk house.
The children had to step back in time to build the house in exactly the same way as it would have been built 5,000 years ago.
The project took place in the grounds of Moulsecoomb Primary School in The Highway, Brighton, but was worked on by pupils from all the schools in the area. It was funded by the Heritage Lottery Fund.
Experts from the East Sussex Archaeology and Museums Partnership helped the children during the nine-month building project. The finished result is thought to be the first of its type to be reconstructed in Britain.
A group of youngsters from Moulsecoomb Primary School went on a fact-finding visit to Stonehenge to learn more about the building process before they began.
The round house has wattle walls and a compressed chalk floor. Children helped construct the wattle walls. They then bent hazel strips around a frame before crushing chalk into a powder, adding water to make a sticky chalk paste, and pushing it into the wattle framework.
Moulsecoomb headteacher Charles Davies said: “It’s been an amazing project – real get-your-hands-dirty stuff. It’s been great fun, and the children have learnt so much.
“It’s also been wonderful having the wider community involved.”
Councillor Vanessa Brown, Brighton and Hove City Council cabinet member for children and young people, said: “Seeing local children right at the centre of what experts have described as one of the most exciting archaeological projects in Britain has been really inspiring.”