The Spire on Dublin's O'Connell St has been officially unveiled - more than a year later than had originally been hoped - by the Lord Mayor, Mr Dermot Lacey.
Mr Lacey led the ceremony with the burial of a "time capsule" six metres below the pavement at the foot of the spire.
Among the items being stored in the steel capsule are the front page from last Thursday's Irish Times, a till receipt from the bar in the Shelbourne Hotel and a packet of 20 Major cigarettes.
The Spire, which cost almost euro 5m, was designed by London architect, Ian Ritchie in 1998.
Last Friday night it finally "sparkled" into life for the first time.
The top nine metres of the 120-metre Spire began to shimmer at about 9 p.m. when the 11,844 tiny holes around the top glistened and the permanent aviation light at its pinnacle shone with them for the first time.