The old Ebrington Barracks parade ground in Derry are opening to the public this evening, creating the biggest piece of open space in the city, and one of the key performance areas for Derry's year as UK City of Culture.
It's the first time the square will be open to the public since it was built in the 1840s.
The regeneration company ILEX says the square is bigger than Trafalgar Square in London.
The square links to the Peace Bridge which opened last year, and marks the first phase of a wider plan to develop the Ebrington complex.
After what he says has sometimes been a frustratingly long wait, Foyle MP Mark Durkan is welcoming the opening of the square...............