The highest point is Cambodia is Phnum Aoral (1,810 m).

The Mekong River, the largest river in Southeast Asia, flows across Cambodia.

Cambodia's Tonle Sap or Great Lake is formed by the Mekong River.

The Tonle Sap River, which flows from Tonle Sap (Great Lake), reverses its direction twice a year. In the dry season the Tonle Sap River flows into the Mekong River and during the rainy season the floodwaters of the Mekong flow back into the Tonle Sap.

Cambodia's first bridge across the Mekong River opened in 2001 linking the east and west of the country.

Angkor Wat, known as the Eighth Wonder of the World, was built by King Suryavarman II (1131 to 1150). The city of Angkor Thom and the Bayon (temple) were built by King Jayavarman VII (1181 to 1220).

The word Angkor is derived from Sanskrit (an ancient Indian language) and means city. Wat means temple.

The Angkor kings built huge reservoirs and canals for irrigation.

Jayavarman VII built road networks connecting all the major towns to Angkor.

Angkor Wat, in the Cambodian jungle, was discovered by French explorers in the nineteenth century.

Most Cambodian young men are Buddhist monks for a short time.

Cambodia was under French control from 1863 until 1953.

Cambodia was part of French Indochina which consisted of Cambodia, Laos and Vietnam.

In 1941 Prince Norodom Sihanouk became King of Cambodia.

During the Second World War Cambodia was occupied by the Japanese.

In 1969 the USA carried out bombing of Vietnamese communist bases in Cambodia.

In 1975 Pol Pot took control of the capital city, Phnom Penh.

During the reign of Pol Pot and the Khmer Rouge over one and a half million people died.

In 1978 Vietnamese troops took control of Cambodia from the Khmer Rouge.

The film "The Killing Fields" is the story of Dith Pran, a Cambodian reporter, who lived in Phnom Penh during the reign of the Khmer Rouge.

After the war in Cambodia landmines continued to cause casualties.

Many Cambodians left the country during the years of war and moved to countries such as Australia , the USA and France.

Mass protests in Phnom Penh followed election results in September 2013.

In January 2015 Prime Minister Hun Sen celebrated thirty years in office.

Like all countries, Cambodia is subject to climate change with coastal towns and villages particularly at risk. Storms and flooding from higher sea levels will affect clean water supply and create mudslides. There will also be a major impact on the Tonle Sap supporting fishing communities living on floating villages.