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.
The Prince of Wales said it was important to "work in harmony with nature" during a special edition of the BBC's Countryfile programme.
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.
The Duchess of Cornwall has met some of the first ever Saudi Arabian female members of parliament. Greeting them at the lavishly decorated Majlis Ash Shura, she said:
Beneath all those pretty smiles there are a lot of very powerful women here.
The Duchess of Cornwall has met the first woman to be appointed to Saudi Arabia's parliament. 30-year-old Majlis Ash Shura said it was an honour to welcome British royalty. Camilla joked how the building was much lighter than the House of Commons.