The Duchess of Cornwall visited Saudi Arabia's first university for women, where women are paid to study without much prospect of a job.
The Prince of Wales and Duchess of Cornwall saw the human cost of the conflict in Syria on a visit to a refugee camp in Jordan.
Prince Charles has celebrated his 64th birthday by going behind the scenes at the new Hobbit film.
Despite the unscheduled stop the royal couple transferred to cars and continued on to the market town of Hay-on-Wye by road.
They finally arrived close to three hours late but emerged looking relaxed and smiling to be greeted by a crowd of several hundred well-wishers.
The Prince of Wales and the Duchess of Cornwall had a "hairy experience" when their royal helicopter was forced to make an emergency landing after it developed a technical fault.
Charles and Camilla were flying to Wales for a day-long tour to Hay and its popular annual festival of literature.
But minutes after boarding their flight they were urgently diverted to Denham Aerodrome, in Buckinghamshire.
A spokesman for the royal couple said: "The pilot carried out a controlled emergency landing after diverting to the airport."
"It was quite a hairy experience," a source close to the palace added.
Badminton Horse Trials winner 2013 New Zealand's Jonathan Paget was presented his trophy by Her Royal Highness the Duchess of Cornwall Camilla Park Bowles during day five of the Badminton Horse Trials in Badminton, Gloucestershire.
The suspect was detained on suspicion of breach of the peace following the incident in Canterbury just before 2:20pm, Kent Police said.
One witness claimed police officers held a man to the ground until the royal couple's car was safely inside the gates of the 900-year-old cathedral.
A Kent Police spokesman said the suspect was still in custody tonight.
"Officers at Mint Yard Gate ... intervened when a man allegedly ran at a car which was taking guests to the Archbishop's enthronement ceremony", the spokesman said.
"A 47-year-old man from Whitstable was arrested on suspicion of breach of the peace and is currently in custody", he added.
Religious leaders from across the globe will join royalty and senior politicians today for the enthronement of the Archbishop of Canterbury.
Those also in the congregation will include representatives of major world religions including Muslims, Jews and Sikhs and senior figures from the Roman Catholic and orthodox churches.
Prince Charles took part in a traditional sword dance on a visit to the ancient fort of Nizwa in Oman.
The Duchess of Cornwall looked on as Charles was handed a double-bladed sword and shield, and the music started up.
The Prince began to shuffle and wave the sword, mimicking the dancers who were performing sword tossing and mock fighting around him.
As the royal couple toured the stronghold they were greeted by children waving Union flags and met people who were making mats and baskets.
The visit is part of their nine-day tour of the Middle East.
The Prince of Wales and the Duchess of Cornwall have met with Saudi Arabia's first ever female MPs. The Duchess said they were "blazing a trail", after the King appointed 30 women to join his previously all-male parliament.
Camilla was joined by the Prince of Wales as they were given a tour of the gold encrusted parliament building in Riyadh. Hanan Al Ahmadi, one of the female members, told the Duchess her visit was an endorsement of what they were doing.
– Hanan Al Ahmadi
We have been waiting for this for a very long time. It is an emotional and very proud moment for us and carries a great deal of responsibility.
You coming here to meet us is an endorsement of what is happening here.
Camilla then replied:
I am so impressed. You are all so clever and well-educated and are blazing such a trail.