Dublin Castle, Dublin

It’s completely worth the €13 for the guided tour, They take you everywhere and give you a brief but elucidating explanation on everything, and they are quite engaging and enthusiastic. You can easily spend at least 3 hours there if you also visit the external area that includes the garden, there’s a lot to see. Even the toilets look beautiful

Good stop to see, you can do a self guided tour with a very reasonable price. The rooms are full of well done paints and other art pieces. I found it very interesting all the dignitaries that have stayed here.

It’s more mansion than castle, but it was interesting. Relatively small for the entry fee, but lots of interesting history. I did the self-guided tour, which was fine. I enjoyed being in a place that is still used for government functions like the presidential inauguration.

Stunningly beautiful and very worth the trip to see! The building has very interesting new additions juxtaposed with the ancient areas. The helicopter landing area/garden was very cool! We did not go inside - maybe next time - but very much enjoyed walking around outside of the castle. Check it out , if not for the whole experience, then for the architecture!

Not really a majestic castle or many things to see here, it's more for the architecture and things around it like the Viking history around (I don't recommend the Viking museum though, heard it isn't worth the money) and the huge library beside the central open space of the castle which only showcases 20% of their collection at a time due to its sheer size of its collection. My guide also said the library is more interesting than the Book of Kells in Trinity College so if you do not wish to pay a fee to squeeze/queue with others to see an old book, I guess you can consider this library instead.