Probably early in the twentieth century.
A Garda directs traffic at the junction of Washington Street and Grand Parade in 1935 according to this tweet.
It’s interesting to see the helmet the Garda is wearing. More like the UK Police than what we’re used to seeing now. Also note T.W. Finn & Co, later renamed Finn’s Corner, who operated a clothes shop at that corner until recently.
Garda four panel helmet. The helmet was worn from 1922 up to the 1940s when it was replaced by the six panel in the 1950s. The helmet is referred to as the Ball-Topped helmet because of the distinctive ball finial on the top, the 1940s issue six panel had a rose finial. The first Garda helmet was a four panelled blue cloth, cork helmet, identical in style to the home service other ranks pattern helmet worn by enlisted ranks in the British army.http://www.irishmedals.ie/garda-uniform-and-badges.php
As others on this thread where I found this image said, probably half of Cork worked here at one time or other in the mid to late twentieth century.
All I remember of Dunlops is the pitch and putt club which is now gone and replaced by a small housing estate in Blackrock.
From the Cork, Blackrock and Passage Railway group on Facebook:
Pictured at Albert Street station is CB&PR locomotive No. 1 which ran on the Cork to Passage West broad gauge line from July 1850 until the conversion to narrow gauge in 1900. It was painted light green with black bands and yellow lining. The dome, just behind the chimney, was of polished brass. It was scrapped in 1900. (Credit to David Harte for the photograph)
You’ll probably recognise the houses in the background, Park View on Victoria Road. I’ve driven or cycled past there too many times to count.
Some images taken from the Echo article, What was a shopping trip to Cork like in the 1950s?
Albert Quay, Cork, has been and continues to be, the site of extensive building work. This is what it looked like in the summer of 1981 when the quay itself was under construction. Via Twitter.
Before the South Link was built. Via Facebook where this photo was posted but it was flipped horizontally.
This is what it looks like today from much the same location.
Union Quay seems little changed except for that shorter building at the far right, maybe.
St. Fin Barre’s Cathedral. Richard Mills/Evening Echo 1981. Found on Facebook.