Dublin Castle is an important place for the life, work and foreign affairs of ancient Irish kings. The living room is tall and spacious. It has the style of the King's family. Notice that I don't say the Royal style. Photographs are not allowed here, but I am not polite to see Western tourists posing as if nothing had happened. Tickets are divided into self-service tour and tour guide, self-service tour is 5 euros, tour guide is about 8 euros.