Four Rivers: Four fluvial arms meet at Phnom Penh, creating an X through which the Mekong, the Tonle Sap and the Bassac Rivers flow, the Tonle Sap changing directions based on the volume of water flowing down from the Mekong.

Riverside: Offers a great view of the 4 rivers, strolling paths, grass, people watching and a great selection of restaurants and bars.

Wat Phnom: Hill-top temple in the center of the city after which Phnom Penh was named. It is a gathering place on holidays and hosts many monkeys, shady trees and an elephant.

Tuol Sleng Genocide Museum (S-21): Nearly 20,000 prisoners were tortured in this former high school turned prison by the Khmer Rouge and later killed. The museum is a haunting building to visit.

Choeng Ek Killing Fields Memorial: Located just outside Phnom Penh, thousands were executed in this Khmer Rouge extermination camp. It now features a memorial stupa displaying thousands of human skulls and pits of bones and clothing where people were executed.

Royal Palace and Silver Pagoda: Gold, Silver, gemstones and artwork are to be found inside the Royal Palace compound near the riverside.

Wat Ounalom: The head Buddhist monastery in Cambodia, located on the riverside.

National Museum: A beautiful piece of architecture featuring the finest collection of Khmer sculptures in the world.

Independence Monument: Located at the center of the intersection of Sihanouk and Norodom Boulevards, the monument commemorates Cambodia's independence from France.

Phsar Thmei (Central Market): Featuring four wings and high ceilings, the domed market is a central landmark in the city and is great to explore.

Phsar Toul Tompung (Russian Market): This is the best market to shop for souvenirs. It also sells clothing, DVDs, CDs and books.