Millennium Clock, Dublin

[1] It took the form of a digital seven-segment display counting down the number of seconds to the year 2000 submerged under the surface of the River Liffey on the west side of O'Connell Bridge in Dublin city centre.

It was turned on in March 1996 but suffered from technical problems, including becoming obscured by mud and algae.

[2][5][6] The Dublin-based architects, Hassett and Ducatez, won the competition called "Countdown 2000" to design the clock in 1994.

[13] An additional feature was a set of speakers which would play recorded noises of Dublin city at 30 second intervals.

In 2004, pranksters took advantage of the space by installing a commemorative plaque memorialising the totally fictitious "Father Pat Noise".