'Freeflow'

Scattered along the River Liffey from the CHQ Building to the 3Arena, there is a stunning art installation over a kilometer long, made up of 900 glass cobbles in shades of watery blue and green with tiny silver and copper fish set inside. They’re like windows to the underwater world.

Installed in 2005 by artist Rachel Joynt, they make for a whimsical walk home after a concert at the arena. Try to spot which lights are merely lights, and which are glowing with a secret, miniature underwater scene beneath the city sidewalk.