While we're on the subject of royal visits... here's video of Queen Victoria in Dublin in 1900
Kate and Prince William are enjoying their royal visit in Australia.
President Michael D Higgins and his wife Sabina was a hit during their recent State visit to the UK.
And Queen Elizabeth enjoyed a very warm reception when she paid a visit to Ireland in 2011.
Royal visits and state visits are nothing new - look at this video of Queen Victoria visiting Dublin in 1900.
Unlike her great grand-daughter Elizabeth, Queen Victoria wasn't known to smile during her visit to Ireland.
Victoria arrived into the country via the port in Dun Laoghaire where she is said to have had a 16 course breakfast before continuing with her Irish itinerary.
Big crowds turned out to greet Queen Victoria as Home Rule was in the air at Westminster.
There were some protests however - one was led by WB Yeats and Maud Gonne. It was reported that as the Queen's carriage came up O'Connell Street, they were seen carrying a black coffin between them.
This video, distributed by British Pathe, shows the British monarch travelling in an open carriage surrounded by a vast cavalry.
The carriage pulls up in front of crowded stands and the queen is presented to a number of parties.
After the brief stop, the carriage and cavalry move off.
Compare and contrast Victoria's visit to royal visits today - no little chats about babies' teething or non-stop commentary about fashion back then.