It has been a prison for a few hundred years and was also the place for a lot of executions.
After that dark and gloomy place, I went next door to something completely different; the Irish Museum of Modern Art.
I was a little disappointed by it - less exibitions than I expected and nothing that really make me go "Hmm..." - although they had some that maybe go "Why?" and "WTF?".
Tate Modern in London is much better, but perhaps I shouldn't compare the two.
At least the entrance was free. :)
Then walking towards the city centre again to arrive at the Guinness Brewery.
I went in to their Guinness Storehouse and was really impressed with what they have built in there. A self-guiding tour of how to make Guinness, all around it and Guinness in general. And on the top floor they had built a bar from which you could look out over Dublin.
Here are some pictures towards the centre of the town: