Princess Anne looked sombre as she arrived at the Orthodox Metropolitan Cathedral in Athens to pay her respects to her second cousin
Ruler Constantine II of Greece passed on from a stroke at 82 years old last week
The previous European ruler was the Duke of Edinburgh's nephew
Individuals from the public lined during that time to see him lying in state
Constantine will be let go in the Customary Metropolitan House of God today
Princess Anne has shown up in Athens to offer her appreciation to Lord Constantine II of Greece.
The European ruler died from a stroke on January 10 in the Greek capital at 82 years old - over 50 years after he was banished in a tactical upset.
The Princess Illustrious - who was the Greek Lord's subsequent cousin - looked grave as she entered the Standard Metropolitan Church building.
In front of the procedures, Constantine's child Crown Ruler Pavlos bowed his head as he investigated his dad's final resting place inside the congregation.
Shortly afterwards, the grieving son greeted Queen Letizia of Spain with a kiss on the hand on the top of the cathedral steps.
The Spanish monarch, 50, styled her hair in a chic updo and opted for minimal jewellery to offset her tailored black coat dress.
Prince Albert of Monaco also made the journey to Greece and was pictured acknowledging crowds of mourners with a wave as he entered the cathedral.
King Willem-Alexander and Queen Maxima of the Netherlands looked visibly emotional as they arrived at the service arm-in-arm.
Princess Anne, 72, pictured walking into the cathedral in Athens to pay her respects to her late second cousin King Constantine II of Greece
Constantine's son Crown Prince Pavlos bowed his head as he looked over his father's coffin inside the church.
King Felipe and Queen Letizia greeted King Constantine II's mourning family before heading inside the church
Queen Letizia and King Felipe of Spain were joined by his parents Juan Carlos and Queen Sofia to pay their respects
The Spanish Queen styled her hair in a chic updo and opted for minimal jewellery for the sombre event
Left: Crown Prince Pavlos greeted Queen Letizia of Spain with a kiss on the hand ahead of the funeral. Right: The mourning son also gave the European royal a quick peck on the cheek
Prince Albert of Monaco waved to crowds outside of the cathedral this morning as he arrived at the funeral
King Willem-Alexander and Queen Maxima looked visibly emotional ahead of the service in Athens
Former Spanish monarchs Queen Sofia of Spain and Juan Carlos I pictured arriving at Metropolitan Cathedral in Athens
Princess Anne looked sombre as she arrived at the Orthodox Metropolitan Cathedral in Athens to represent the UK
Left: King Carl XVI Gustaf and Queen Silvia of Sweden looked sombre in black as they arrived at the Greek cathedral. Right: King Philippe and Queen Mathilde of Belgium arrived moments later
Meanwhile, former Spanish king Juan Carlos and Queen Sofia were among other high-profile European royalty in attendance.
It comes after Greek mourners lined the streets of Athens to pay their respects to King Constantine II before funeral processions began this morning.
Today, Constantine - who was the Duke of Edinburgh's nephew - will be laid to rest in the Orthodox Metropolitan Cathedral in Athens.
Members of the public queued through the night to see the last King of Greece's coffin at the chapel of Agios Eleftherios, next to the cathedral, this morning.
King Felipe and Queen Letizia bowed their heads in front of the coffin as a mark of respect for the late monarch
Queen Mathilde and King Philippe of Belgium pictured inside the church ahead of the funeral service
Former Spanish King Juan Carlos, his wife Queen Sofia and former Princess Irene took their seats before the funeral service began
King Constantine II's coffin pictured being taken into the cathedral after members of the public paid their respects this morning
Pallbearers carry the coffin of Greece's former King Constantine II outside the Metropolitan Cathedral of Athens
Constantine's coffin was draped in a Greek flag as members of the public were invited into the chapel to say their goodbyes to the former monarch.
Over the weekend, royals from across Europe - including Queen Margrethe of Denmark and King Felipe and Queen Letizia of Spain - flew into the Greek capital to attend the funeral today.
The public funeral will see the King's widow, Queen Anne-Marie, attend, as well as his son Crown Prince Pavlos, who is now the head of the former Greek royal family.
Deputy Prime Minister Pangagiotis Pikrammenos and Culture and Sports Minister Lina Mendoni will represent the Greek government at the service.
Greek mourners queued through the night to see their former King's coffin at the Agios Eleftherios chapel
Mourners carried Greek flags as they waited to pay their respects to their former King, who passed away last week
The funeral will be attended by 200 guests today and will end with a procession around the Greek captial
Mourners pay their respects to the former King in the Chapel of Saint Eleftherios, next to the Orthodox Metropolitan Cathedral
King Constantine II of Greece, pictured here at the 75th birthday dinner of his sister-in-law Queen Margrithe of Denmark in 2015
Queen Margrethe of Denmark arrives in Athens yesterday ahead of King Constantine's funeral today
King Felipe and Queen Letizia of Spain arrive at the Grande Bretagne Hotel in Athens on Sunday night
Among the other European royals to attend will be King Philippe and Queen Mathilde of Belgium, King Carl XVI Gustaf and Queen Silvia of Sweden, as well as Princess Beatrix of the Netherlands.
There are a total of 200 guests who will attend today's proceedings - including Greek shipowners and businessmen.
His public funeral will be followed by a 29km procession to Tatoi Palace, where there will be a separate private ceremony and he will be laid to rest with other members of the Greek royal family.
A second cousin of King Charles and Godfather to Prince William, Constantine II lived most of his life in exile after a Greek referendum which rejected the monarchy in 1974.
He was the only son of King Paul and Queen Frederica of Greece and the last king of the country.
Constantine, an Olympics gold medalist in sailing, was 27 years old and had been a king for three years in 1967, when he was forced into exile with his wife Princess Anne-Marie, the youngest daughter of King Frederick IX of Denmark and his family.
He wasn't to return to Greece for decades, where he was deeply unpopular for his decision to swear-in the colonels who seized power in April 1967. He briefly cooperated with them before staging a failed counter-coup, that led to his exile.
The military junta abolished the monarchy in 1973. In a referendum after the fall of the junta in 1974, Greece rejected monarchy again.
After the referendum, his relationship with Greece was testy. He was allowed to return only for a few hours in 1981 to bury his mother, Queen Frederika, at the family estate at Tatoi, about 20 kilometres north of Athens.
In the 1990s, Constantine was stripped of his Greek citizenship and the state seized Tatoi and a palace on the island of Corfu where Britain's Prince Philip was born.
The King had been in ill health in recent months, having several hospital admissions towards the end of 2022.
He is survived by his wife, the former princess Anne-Marie of Denmark, youngest sister of Queen Margrethe II; five children, Alexia, Pavlos, Nikolaos, Theodora and Philippos; and nine grandchildren.
