King Bhumibol Adulyadej of Thailand, the world's longest-reigning monarch, marks 60 years on the throne on Friday.

He ascended the throne on 9 June 1946 after his elder brother died mysteriously. In 1950, he married a diplomat's daughter, Sirikit Kitiyakara, and was formally crowned one week later.

During the 1950s and early 1960s, monarchic traditions such as the royal barge were revitalised by military leaders seeking political legitimacy, allowing the monarchy to flourish.

In 1955, King Bhumibol became the first monarch to visit Thailand's poor north-eastern region. In 1960 he embarked on a series of state visits to countries around the world.

The king has played a key role in times of political crisis. In both 1973 and 1992, his involvement ended bloodshed during popular protests against military leaders.

In April 2006 he used his influence to end political deadlock following an election boycotted by the opposition. A new election will be held, though the date is not yet set.

The king is a deeply revered figure. His work on projects as diverse as irrigation and fruit cultivation have made him very popular among Thailand's people.