The country’s violent modern history looms large – visiting the Tuol Sleng Prison and the Killing Fields is a haunting but essential experience – but despite the kingdom’s dark past, it is rife with opportunities for uplifting experiences. Watch the sun rise over the incredible Angkor Wat, the world’s largest single religious monument; sail along the mighty Mekong River or wile away the days on some of Southeast Asia’s lesser-known paradise isles.