Thailand’s Royal Palace says King Bhumibol, the world’s longest-reigning monarch, has died at age 88.
The palace said the king passed away peacefully on Thursday at Bangkok’s Siriraj Hospital.
CCTV’s Tony Cheng looks back on the king’s life and legacy. Follow Tony Cheng on Twitter @TLCBkk

“Even though the board of doctors has closely monitored and treated him to the best of its abilities, the king’s condition never improved,” it said in a statement.
King Bhumibol, also known as Rama the 9th, was the longest-reigning monarch in history. He took the throne of the Kingdom more than 70 years ago, becoming the ninth reigning monarch of the Chakri Dynasty.
During his time, he witnessed more than 20 military coups and more than 50 cabinet changes in his country. Thailand’s long-standing relationship between the monarch and the military in governmental matters began in 1957.
Click on the photo gallery for more.

In this March 7, 1935, file photo, Prince Bhumibol, left, stands with his brother, King Ananda Mahidol of Siam, now known as Thailand, at their school in Lausanne Switzerland. (AP Photo, File)

Photo taken in June 1955 shows King of Thailand Bhumibol Adulyadej (L), the ninth monarch of Thailand from the Chakri Dynasty known as Rama IX, and Sirikit Kitiyakara, Queen Mother of Thailand, posing with their children, Princess Maha Chakri Sirindhorn (with her mother) and Crown Prince Maha Vajiralongkorn during his baptism. (AFP PHOTO/ Unkown)

In this April 12, 1977, file photo, Thailand's King Bhumibol Adulyadej and Queen Sirikit attend a symbolic mass cremation ceremony for Thai soldiers and civilians killed by communist insurgents over a one year period. (AP Photo/Neal Ulevich, File)

In this May 27, 1963, file photo, Japan's Emperor Hirohito, right, walks with Thailand's King Bhumibol Adulyadej, as he arrives in Tokyo. At rear are Thailand's Queen Sirikit, third from left, and Japan Empress Nagako, second left. (AP Photo, File)

In this June 28, 1960, file photo, U.S. President Dwight Eisenhower, center, is seated between Thailand's King Bhumibol Adulyadej, left, and Queen Sirikit for a motorcade drive from National Airport to the White House in Washington. (AP Photo, File)

In this July 5, 1960, file photo, Thailand's King Bhumibol Adulyadej, right, plays the saxophone during a jam session with legendary jazz clarinetist Benny Goodman, left, drummer Gene Krupa, second left, and trombonist Urbie Green in New York. (Bureau of the Royal Household via AP, File)

In this Dec. 16, 1938, file photo, thirteen-year-old King Ananda of Siam, now known as Thailand, left, and his brother Prince Bhumibol, right, inspect a model train presented to him at Saranromya Gardens in Bangkok. (AP Photo, File)

This file photo taken on July 1, 1960 shows Thai Queen Sirikit (2nd L) and King Bhumibol Adulyadej (L) being greeted by Britain's Queen Elizabeth II (R) and Prince Philip, Duke of Edinburgh, upon their arrival in London. (AFP PHOTO / CENTRAL PRESS / STR)

This file photo taken on September 25, 1991 shows visiting Japanese Emperor Akihito (2nd R) and Empress Michiko (2nd L) posing with Thai King Bhumibol Adulyadej (R) and Queen Sirikit at the Grand Palace in Bangkok. (AFP PHOTO / JIJI PRESS / JAPAN POOL)

This file photo taken on July 7, 1980 shows Thai King Bhumibol Adulyadej taking a picture during his trip to Cambodia. (AFP PHOTO / PANASIA / STR)

This file photo taken on December 5, 1999 shows (L-R) Thai King Bhumibol Adulyadej, Crown Prince Maha Vajiralongkorn and Queen Sirikit appearing at a balcony of Anantasamakom Throne Hall in Bangkok to mark the King's birthday. (AFP PHOTO / PORNCHAI KITTIWONGSAKUL)

In this Dec. 5, 2012, file photo, Thailand's King Bhumibol Adulyadej, left, is seated as Crown Prince Vajiralongkorn, second left, and Princess Sirindhorn, right, stand after he addressed the crowd from a balcony of the Ananta Samakhom Throne Hall on his 85th birthday in Bangkok. (AP Photo/Wason Wanichakorn, File)

In this Nov. 18, 2012, file photo released by Thailand's Bureau of the Royal Household, U.S. President Barack Obama, left, talks with Thai King Bhumibol Adulyadej at Siriraj Hospital in Bangkok. (Bureau of the Royal Household via AP, File)

This file photo taken on February 17, 2006 shows French President Jacques Chirac (R) speaking to Thai King Bhumibol Adulyadej at the start of a gala dinner at the Royal Palace in Bangkok. / AFP PHOTO / POOL / REMY DE LA MAUVINIERE

People react as they wait for news on the health of Thailand's King Bhumibol Adulyadej at Siriraj Hospital, before the announcement of his death in Bangkok on October 13, 2016. (AFP PHOTO / LILLIAN SUWANRUMPHA)
Rated as one of the world’s richest royals, King Bhumibol was widely loved and respected at home. He was also an accomplished musician, painter, and writer. Many considered him a demigod.
He is survived by his wife, Queen Sirikit and four children, including Maha Vajiralongkorn, the Crown Prince of Thailand, who is expected to succeed his father to the throne.
Hundreds of Thais have gathered outside the hospital since the palace announced on Sunday that the king’s condition had become “unstable.”
Prime Minister Prayuth Chan-ocha announced that Crown Prince Maha Vajiralongkorn would become the new monarch in accordance with the constitution. He said government officials will observe a one-year mourning period, and no government events would be held for one month.
“He is now in heaven and may be looking over Thai citizens from there,” he said.
The once-vigorous king had withdrawn from public life over the last decade due to his ill health. He lived at the hospital and had been notably silent about the political upheaval that has shaken Thailand in recent years.
Hundreds of tearful mourners gathered Thursday outside the hospital, grasping photos of the king, chanting prayers and looking up at the building where he had been treated.
“There is no word to explain my feeling right now,” Gaewkarn Fuangtong, a humanitarian worker, said in Bangkok’s financial district.
“I lost one of the most important people in my life. I feel like I haven’t done enough for him. I should have done more. I will do good, do better for his sake.”
Bhumibol had suffered from a variety of ailments related to old age, including kidney and lung problems.
In a statement late Wednesday, the palace said his blood pressure had dropped, his liver and kidneys were not working properly and he was on a ventilator.
According to Thai tradition, members of the royal family will enter an official period of mourning which will last for at least 100 days.
Story by the Associated Press with additional information from CCTV News.
Lindsey Ford on King Bhumibol Adulyadej’s life and legacy.
For more about King’s life and legacy, CCTV America’s Mike Walter interviewed Director of Asian Security at Asia Society Policy Institute, Lindsey Ford.