Magnificently restored after being nothing but a burnt-out hulk for decades, the Customs House again dominates the Liffeyside. Unfortunately not quite visible from the city center, as some bright spark decided to build a railway bridge right next of it.
The best views are from Matt Talbot Bridge in the early morning. After that traffic kicks in ...
The Campanile of Trinity College
The view that spawned a million postcards - the solitary campanile (bell tower) dominates the inner courtyard of Trinity College. Cue hundreds of tourists and the odd student obscuring your view.
Try a different angle - the campanile is rarely photographed (but no less photogenic) from the direction of the Rubrics. If you need the classic view, try any platform in front of the other buildings.
The Four Courts
Another of Dublin's official buildings and nearly destroyed during the Easter Rising, the Four Courts have been restored and are best viewed from the Liffey quays. Up close details of modern life will emerge, like security barriers and less salubrious "visitors".
Note that you may enter the visitor's gallery (if there is room) and have a look at the interior - but photography is forbidden here.
Ooooookay ... the world's highest free-standing monument resembles a needle and is about as popular with locals as the sewers below O'Connell Street and the Spire. You know they're there, but you don’t stop and admire them. Only artists, architects an non-Dubliners spare this steel column more than a passing glance. Yet it has become a significant part of Dublin's skyline.
Popular nicknames are "The Spike", "The Needle" or "The Stiletto in the Ghetto".
The Guinness Brewery
On calm days you may smell the Guinness brewery before you actually see it - and depending on you the thick yeasty odor might make you sick or smile. The classic view for most visitors is the entrance area to the Guinness Hopstore museum. If you want a better view, try the front lawn of the National Museum in Collins Barracks.
And if you want to experience the sheer size of Guinness, simply walk around the parameter. You’ll need a pint afterwards.
Ringsend Power Station
It is neither a thing of beauty nor is it old - but the Ringsend Power Station with its twin stacks has achieved iconic status. And it spells "Dublin" to many people - if only because it is the first Dubln building you can make out when arriving by sea.
It is visible from almost anywhere in Dublin Bay, but the best view is from the sun deck of the "Ulysses" ferry ...
Best described as a wild medley of styles, Dublin Castle is far from your typical castle. It has grown almost organically over the centuries and, due to its sprawling, yet hemmed-in city center location can only be properly viewed from the air.
So it's parts of Dublin Castle that have achieved iconic status as Dublin landmarks. Mainly the courtyard, the neo-gothic chapel and the adjacent Record Tower ... soooo, like, medieval! And of course the view of the colorful facades from the Dubh Linn Gardens.
The Papal Cross in Phoenix Park
If you are not religious, these are just girders painted white ... but the massive Papal Cross in Dublin's Phoenix Park still is a focal point for many Catholics in Ireland. It marks the spot where John Paul II held the largest mass ever on these shores.
The memorial to the Pope's visit, as it is today, is a staple of bus tours through Dublin. Often just because it makes a great elevated viewing platform.
The General Post Office
Heavily restored after the heavy shelling of 1916, the General Post Office is just about the only remarkable building on O'Connell Street - but it is far more important for its historical significance. Here Patrick Pearse declared the Irish Republic (and war on the British Empire) at the start of the Easter Rising. A few days later the building was a burnt-out hulk and Pearse stood in front of an execution squad.
A major regeneration of what will be "Dublin's North Quarter" is being prepared, this will see major structural impact on the GPO.
I am always in two minds about Ha'penny Bridge, spanning the Liffey between Temple Bar and "de Nordsoide" - on a good day it is a quaint Victorian construction worth a photo. On a bad day it is a crowded haunt of beggars and tourists best avoided. But no other Liffey bridge is "more Dublin" than the Ha'penny Bridge.
And visiting Dublin without crossing it would be like going into a pub without drinking Guinness. Meaning you won’t be struck dead by a bolt of lightning if you don’t, but every other Dublin tourist will ask you how you could miss out ...