Episode 18 Beautiful waterfall in Cambodia near the boarder of Vietnam. Bou Sra Waterfall, also referred to as Bousra, Bu Sra, Busra or Boo Sra Waterfall (Khmer: ទឹកជ្រោះប៊ូស្រា), is a scenic waterfall now located in Bousra Eco Park, Pech Chreada District, Mondulkiri Province, Cambodia, about 43 kilometers from the provincial town of Sen Monorom and just 15 kilometers from the Vietnamese border.Considered one of Cambodia's most famous tourist attractions, Bou Sra is popular due to its triple-tier drop. Previously, Bou Sra could only be viewed on ground level. However, with recent additions of platforms, guests can now see the waterfall from higher elevations for a better view.