See the once in a lifetime view of the Emerald Buddha in the Silver Pagoda of Phnom Penh. There is some debate regarding what material it was made out of and this adds to the mystique. The king of the pre-Khmer Rouge reign, Norodom Sihanouk, had the temple's interior inlaid with more than 5,000 tiles of silver. Some of these are open to public viewing. The National Museum of Cambodia is home to a range of Cambodian and Khmer historical artefacts, with over 14,000 items covering much of the country's history.
In the city of Battambang, you'll find a protected heritage quarter, as well as many cafes, art galleries, and alternative art spaces. Just outside the city, bird-lovers will love Prek Toal Bird Sanctuary. For something a bit different, head to Preah Monivong National Park, where you can visit the jungle as well as French colonial ruins.