Phnom Penh is the national capital of Cambodia and has grown to become the nation's economic, industrial, and cultural center. Once known as the "Pearl of Asia," it was considered one of the loveliest French-built cities in Indochina in the 1920s. Phnom Penh, along with Siem Reap and Sihanoukville, is significant global and domestic tourist destinations for Cambodia. Many parts of Phnom Penh are still a testament to its French colonial past. A cyclo ride is a traditional form of local transport where you sit and enjoy the backstreets and architecture of the city while the cyclo rider pedals you around.

The Royal Palace is one of Phnom Penh’s most iconic landmarks. The construction began in 1886 after King Norodom relocated the royal capital to Phnom Penh and was completed before World War I. Up until today, the palace is the primary residence of The King of Cambodia.

The beautiful Silver Pagoda is located next to the Royal Palace in Phnom Penh. With its beautiful garden, it is a perfect get away from the busy streets of Cambodia's capital. The inside of the pagoda is equally stunning as countless handcrafted silver tiles are covering the floor. The pagoda is also known as the Temple of the Emerald Buddha because the primary Buddha statue is made of emerald or baccarat crystal.

The Tuol Sleng Genocide Museum is a museum in Phnom Penh, the capital of Cambodia, chronicling the Cambodian genocide. The site is a former secondary school which was used as Security Prison 21 (S-21) by the Khmer Rouge regime from its rise to power in 1975 to its fall in 1979. From 1976 to 1979, an estimated 20,000 people were imprisoned at Tuol Sleng (the real number is unknown). Tuol Sleng means "Hill of the Poisonous Trees" or "Strychnine Hill". Tuol Sleng was just one of at least 150 torture and execution centers established by the Khmer Rouge though other sources put the figure at 196 prison centers. On July 26, 2010, the Extraordinary Chambers in the Courts of Cambodia convicted the chief of Tuol Sleng Prison, Kang Kek Iew, (alias Duch) for crimes against humanity and grave breaches of the 1949 Geneva Conventions and sentenced him to life imprisonment

Choeung Ek is the site of a former orchard and mass grave of victims of the Khmer Rouge killed between 1975 and 1979 about 17 kilometers south of Phnom Penh, Cambodia. It is the best-known of the sites known as The Killing Fields, where the Khmer Rouge regime executed over one million people between 1975 and 1979. Mass graves containing 8,895 bodies were discovered at Choeung Ek after the fall of the Khmer Rouge regime. Many of the dead were former political prisoners who were kept by the Khmer Rouge in their Tuol Sleng detention center and in other Cambodian detention centers. Today, Choeung Ek is a memorial, marked by a Buddhist stupa. The stupa has acrylic glass sides and is filled with more than 5,000 human skulls. Some of the lower levels are opened during the day so that the skulls can be seen directly. Many have been shattered or smashed in.