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Ireland prepares for first visit by a British monarch in 100 years

Cathan McNaughton / Reuters

A baby stroller adorned with signs of protest against the upcoming visit of Britain's Queen Elizabeth is pushed through St Stephen's Green in Dublin May 16, 2011. Britain's Queen Elizabeth will make a four day state visit to Ireland on Tuesday which is the first state visit by a British monarch since Ireland's independence.

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An Irish police officer tapes street furniture shut to prevent tampering ahead of the state visit to Ireland by the Queen on May 16, 2011 in Dublin, Ireland.

DARREN STAPLES / Reuters

A woman walks past graffitti written in protest against the visit of Britain's Queen Elizabeth in Dublin, May 16, 2011.

Chris Jackson / Getty Images

Colm Lyons of Sinn Fein poses for a photo outside the Sinn Fein bookshop on May 16, 2011 in Dublin, Ireland. Dublin is preparing for the Queen and Duke of Edinbugh's historic visit tommorow, the first by a monarch since 1911. An unprecedented security operation is taking place with much of the centre of Dublin turning into a car free zone. Republican dissident groups have made it clear they are intent on disrupting proceedings.

Here's a story about the visit, and why it's been so long.