Today's historic visit is a symbolic ending to the painful separation of British and Irish states, but 3000 unsolved murders remain.
Half a million bricks were used for a 32m high Lego tower - which is now a record breaker
An archive of aerial photographs has been put online by English Heritage, giving a unique perspective of landmarks in the region.
Cartier International Day is typically one of the most star-studded sporting events of the year. The event hosts the Queen's Cup Final in the sport of polo. The actress Michelle Dockery, who stars in Downton Abbey, was one of those attending the prestigious event in Windsor.
A mum from Windsor who continually abused her baby ending in his death, had four years added to her prison sentence today by the Court of Appeal. The original sentence of 14 years was described as too lenient after she left her 11-month-old son with bruising and broken bones before he died.
Cary Johnston has this report.
The Court of Appeal has increased the minimum sentence of a Windsor mother who was convicted of murdering her own child.
Emma Wilson was jailed for life, and told she would serve a minimum of fourteen years after inflicting fatal injuries to her eleven month old baby, Callum.
However, the Attorney General referred the case, as being potentially unduly lenient.
She will now serve a minimum of seventeen years.
Emma Wilson was jailed for 14 years for the murder of her son Callum, who was just 11 months old.
Today, the Attorney General is appealing her sentence at the Court of Appeal in London, saying it was "too lenient."
She was sentenced to life, serving a minimum of 14 years in jail in January this year.
Callum died of an "unsurvivable brain injury."
He had spent the first months of his life in foster care before being returned to his natural mother Emma.
A review into his death last month said more could have been done to save him.
There are big delays on the M4 near Windsor after a car fire.
There are several miles of queues in each direction as the car caught fire between Junction 6 and 7 heading towards Reading.
Ireland's President Michael Higgins today praised the "warm friendship" with the UK as he became the first Irish head of state to address the House of Parliament.
Mr Higgins said the links between the two countries were now "strong and resolute" and there was now "mutual respect" despite historical differences.
The Queen and the Irish President Micheal D Higgens have been viewing Irish items in the Royal collection in Windsor as part of the historic state visit.
President Higgins will address the Houses of Parliament later this afternoon, before the royal banquet this evening.
Irish President Michael Higgins has made history today by becoming the first ever Irish President head of state to visit the UK.
He was greeted by the Queen and Duke of Edinburgh at Windsor Castle today along with his wife Sabrina Higgins.
The Queen and the President of Ireland stood side by side to observe the Irish Anthem being played by a military band in Windsor, during the first visit to the UK by an Irish head of state.
The anthem was played after the President Higgins and Michael Higgins were honoured with two separate gun salutes, and Mr Higgins and Philip inspected troops of the Queen's Company, Genadier Guards.
Major Andrew Seddon, captain of the Queen's Company Grenadier Guards, invited Mr Higgins to inspect the guard of honour, speaking to him in Irish. The Irish Guards was represented by their regimental band as the troops are currently on peacekeeping duties in Cyprus.
President Higgins presented a new ceremonial red coat to its regimental mascot, an Irish wolfhound called Domhnall of Shantamon.