Tasek Merimbun, also known as Merimbun Heritage Park, is 27km (17mi) inland from Tutong, and contains Brunei's largest lake. It's a pretty, tranquil spot surrounded by forest, with a couple of walking trails and two islands which can be visited using the services of local boatmen. The blackwater lake is the only one of its kind in Borneo.
Jerudong Park PlaygroundThis sprawling amusement park was commissioned by the sultan in 1994 as a gift to his people. Entry was free until 2000, but when it started charging, locals lost interest. Now many rides languish, waiting for spare parts or to be re-insured but it's still an intriguing experience to wander round the massive semi-deserted grounds in the evening.
Ulu Temburong National ParkBrunei's main national park is worth seeing, but sluggish permit procedures mean it's easier to go on an organised tour than independently. Go to Bangar's tourist office and try to haggle for a spare seat when tour groups come through. The park has steps through the jungle and a canopy walkway provides a high-level perspective on the rainforest.