Ireland was green and quiet after being in the UK.
The castles were plentiful and fascinating. We got very used to walking up tight spiral staircases that were very narrow. You had to be patient and walk up them slowly, because there was always a crowd in front of you - definitely not suitable for those who suffer claustrophobia.
The River Shannon. It felt very romantic. I don't think that I have every felt that about a river before, but there was something very special and mystic about walking its banks.