The room off Buckingham Palace's famous balcony will now be accessible to the public.

The monarch made a public appearance to mark the holiday as he undergoes treatment for cancer.

King Charles made his first significant public appearance since announcing his cancer diagnosis in February, celebrating Easter at the St. George’s Chapel in Windsor.

New photos show King Charles III reading some of the thousands of cards he received following his cancer diagnosis.

Buckingham Palace shares new images of King Charles since his cancer diagnosis.

The Duke of Sussex tells ABC News’ Will Reeve he was “grateful” he was able “to get on a plane and go see” his father following the king’s diagnosis.

Harry spoke to "GMA" about his family and the 2025 Invictus Games.

King Charles made his first public appearance since being diagnosed with cancer and he released a statement saying his "most heartfelt thanks for the many messages of support."

Britain's King Charles and Queen Camilla attended a church service this morning near the royals' estate north of London.

King Charles III has made his first public appearance since Buckingham Palace announced he was diagnosed with cancer.

Harry described tensions with his father and brother in his memoir "Spare."

King Charles III became king in 2022. His recent cancer diagnosis has raised questions about what happens in the event of his death or abdication.

As King Charles continues cancer treatment and Princess Kate recovers from abdominal surgery, William is left holding the royal reins.

Both Princess Kate and King Charles III are facing health issues.

Harry, who now lives in California, was seen Tuesday arriving at Clarence House, one day after Buckingham Palace revealed news of the British monarch's cancer battle.

For decades, the two have remained side by side through the ups and downs.

According to Prime Minister Rishi Sunak, the cancer was caught early which was not disclosed when Buckingham Palace made the announcement.

Buckingham Palace shared that the cancer was identified during the 75-year-old monarch’s recent hospital procedure for benign prostate enlargement, but did not specify the type of cancer or treatment.

Buckingham Palace has not provided detailed information about King Charles’ treatment, but other royals have stepped up to help and Prince Harry has returned to the U.K. to see his father.

U.K. Prime Minister Rishi Sunak said Tuesday that King Charles III's cancer was "caught early" and he would "continue to communicate with him as normal."

King Charles III is the oldest child of Queen Elizabeth II, whom he succeeded.

An announcement from Buckingham Palace said, "Subsequent diagnostic tests have identified a form of cancer."

King Charles III, 75, has cancer, Buckingham Palace announced on Monday.

The palace has not specified the type of cancer or type of treatment.

Buckingham Palace reported King Charles was released from the hospital after undergoing a procedure for an enlarged prostate.

King Charles III, 75, was treated for an enlarged prostate and is currently recovering, according to Buckingham Palace.

King Charles III has arrived at a London hospital for scheduled treatment this morning, according to a statement released by Buckingham Palace.

Buckingham Palace representatives did not say how long the king will remain in the hospital under care.

Plus, the latest on the recovery of the Princess of Wales after surgery at the same hospital as her father-in-law, King Charles III.

Buckingham Palace announced last week that the monarch will undergo a “corrective procedure” to treat an enlarged prostate.

The Princess of Wales is recovering from abdominal surgery, while Buckingham Palace revealed that King Charles III will undergo a procedure next week to be treated for an enlarged prostate.

King Charles will undergo a procedure next week to be treated for an enlarged prostate, according to Buckingham Palace.

The Princess of Wales is recovering from planned abdominal surgery, while the king will be treated next week for an enlarged prostate, officials said.

World renowned K-pop group BLACKPINK was given honorary Members of the Order of the British Empire medals in recognition of the group’s efforts as advocates during the COP26 Summit in 2021.

King Charles III also remembered his mother Queen Elizabeth II for "all she meant to so many of us" on the first anniversary of her death.

The king and queen attended a private service at Crathie Kirk in Scotland on the first anniversary of Elizabeth's death.

Known for its interlinked series of gardens, the estate takes sustainability a step further with caretakers using a method known as scything to maintain the grass.

This year's Trooping the Colour is the first of King Charles' reign.

London was Biden’s first stop ahead of his trip to Vilnius, Lithuania for the 74th NATO summit.

Biden will attend a series of events with King Charles, their first meeting since his coronation earlier this year.

King Charles III celebrates his first official birthday as monarch.

The annual "trooping the colour" for King Charles III.

Louis, 5, showed his personality once again at the historic event.

After attending his mother's coronation 70 years ago, King Charles III was coronated in his own right in a traditional ceremony with modern touches.

Protestors chanted 'not my king' during the coronation.

Perry and Richie are two performers for Sunday's concert on a star studded list.

Here are some of the biggest highlights from the ceremony celebrating the new monarch.

Prince George, Princess Charlotte and Prince Louis captured the world's attention as they attended their grandfather's coronation ceremony.

Prince Harry and Princess Anne, along with the Prince and Princess of Wales, are among the royals attending the coronation.

More familiar faces showed up to attend the ceremony celebrating Charles as the new monarch