A scenic spot popular with locals, Nui Coc Reservoir is 25km west of Thai Nguyen. It’s a pretty stretch of water and a major drawcard for Hanoi residents looking to get away from it all. On summer weekends it can get particularly crowded. A one-hour, circular motorboat tour of the lake is the thing to do and costs about 250,000d. You can use the water park’s swimming pool for 20,000d, and also rent rowboats. It could be worth a visit if you’re travelling to Ba Be National Park, with your own wheels, and fancy a dip.