The establishment of the Royal Palace in Phnom Penh in 1866 is a comparatively recent event in the history of the Khmer and Cambodia. The seat of Khmer power in the region rested in or near Angkor north of the Great Tonle Sap Lake from 802 AD until the early 15th century. After the Khmer court moved from Angkor in the 15th century after being destroyed by Siam, it first settled in Phnom Penh. The main elements of the public eastern courtyard of the modern palace are: The Throne Hall, which contains the three main royal thrones and is the place kings are crowned and where foreign ambassadors are received; -The Napoleon Pavilion, which Norodom used as a reception hall and is today a museum; -The Phochani Pavilion, a banqueting hall; -The Chan Chhaya or Moonlight Pavilion on the northeast section of the wall, used for state banquets and dance performances; -The Damnak Chan behind the Napoleon Pavilion, an administrative building.

The Silver Pagoda is located on the south side of the Royal Palace in Chey Chumneas, Phnom Penh. The official name is Wat Ubaosoth Ratanaram, also known as Wat Preah Keo Morakot which is commonly shortened to Wat Preah Keo in Khmer. This temple is called Wat Prak by foreign tourists because the floor is made of silver, the whole floor is covered with 5329 pieces of silver in One tablet weighs 1,125 kg. There are 1,650 artifacts on display in the temple, most of which are made of gold, silver, bronze and adorned with precious stones such as diamonds, rubies, sapphires and other precious stones. The statue is made of 90 kilograms of gold and contains 9584 diamonds, the largest of which is 25 carats.

A market and an art deco landmark in Phnom Penh, the capital of Cambodia. The bright yellow building completed in 1937 has a 26-metre high central dome, with four tall arch-roofed arms branching out diagonally across the block, creating vast hallways housing countless stalls and a variety of goods. Initially designed by city architect Jean Desbois, construction works were supervised by French architect Louis Chauchon. When it first opened in 1937, it was said to be the biggest market in Asia; today it still operates as a market.

To accommodate the victims of purges that were important enough for the attention of the Khmer Rouge, a new detention center was planned in the building that was formerly known as the Tuol Svay Pray High School, named after a royal ancestor of King Norodom Sihanouk, the five buildings of the complex were converted in March or April 1976 into a prison and an interrogation center. Before, other buildings in town were used already as prison S-21. The Khmer Rouge renamed the complex "Security Prison 21" (S-21) and construction began to adapt the prison for the inmates: the buildings were enclosed in electrified barbed wire, the classrooms converted into tiny prison and torture chambers, and all windows were covered with iron bars and barbed wire to prevent escapes and suicides. From 1976 to 1979, an estimated 20,000 people were imprisoned at Tuol Sleng (the real number is unknown). At any one time, the prison held between 1,000 and 1,500 prisoners.

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.

The Independence Monument in Phnom Penh, capital of Cambodia, was built in 1958 to memorialise Cambodia's independence from France in 1953. It stands on a roundabout in the intersection of Norodom Boulevard and Sihanouk Boulevard in the centre of the city.

The Norodom Sihanouk Memorial, also called the Statue of King Father Norodom Sihanouk, is a monument commemorating former King Norodom Sihanouk located in Phnom Penh, Cambodia. The bronze statue is 4.5 meters tall and is housed under a 27 meter high stupa in the park east of the Independence Monument.

In 1372, a wealthy old lady named "Penh" lived on a small hill near the bank of the confluence of the four rivers. One day, when it was raining, Penh went down to the port to take a bath and saw a floating Koki tree in the river and she called the village to fish it from the water. She and the villagers took a piece of wood to scrape off the mud and in the hole of the Koki tree, there were four Buddha statues made of bronze, brass and one made of marble. Another statue was in the form of Vishnu with the hands holding a staff, a chain, a snail, and a lotus flower. Penh asked the villagers to help retrieve the Koki tree and retrieve the four treasures. Later, Penh assigned the villagers to build an artificial hill and build a small wooden temple on top of the hill to house the statue. She invited monks to pray for the statues and the monks named the hermitage "Wat Phnom" which is known to this day.