Bike to Sam Mountain: rent a bike from your hotel (US$1-2) and ride 6 m to the base of Sam Mountain. It's an easy ride over flat paved and gravel road, just watch out for traffic. Walk on food from the base of the mountain, up the stairs to the top. Many viewpoints and cafe's with hammocks along the way to stop for a drink and a rest. Alternatively you can take a moto straight to the top of Sam Mountain, a great place to catch the sunset and see the views of Vietnam and into Cambodia.