This sprawling, lovely organic pepper farm offers guided walks in French, English and Khmer, explaining how several varieties of pepper are grown, harvested and processed. The farm also grows fruits, chillis, herbs and peanuts, and there's a restaurant and shop where you can buy pepper at steep prices. (The money helps pay for children's English classes at local schools.)
A remork-moto (tuk tuk) trip out to the farm with an English-speaking driver costs around US$20, and brings guests past salt flats and a 'secret lake'. Shorter tours are free; longer guided walks include a BBQ lunch and cost US$18.