Sibu is the great river town of central Sarawak, built where the Igan River slips away from the broad, brown Rajang. It is not pretty in the easy postcard sense, but it is one of the best places in Malaysian Borneo to feel the river economy at work: express boats nosing up to the wharf, timber-town money in the shophouses, and a Chinese-Foochow food culture that locals defend with real pride.
The town centre is compact. Start at the Rejang Esplanade, where the river traffic gives Sibu its pulse, then walk to the old Tua Pek Kong Temple and the Sibu Central Market. The Sibu Heritage Centre is useful early in a visit because it explains the Iban, Malay, Melanau, and Foochow Chinese threads that made the town.
Sibu is also the classic starting point for journeys upriver into the interior. Travellers heading toward Kapit, Belaga, and the longhouse country of the upper Rajang usually pass through here, and that is still the town's strongest travel argument: it is a working gateway rather than a polished attraction.
Give Sibu a day if you are crossing Sarawak overland or by river. Stay longer if food markets, old temples, and river towns are your thing; move on quickly if you need beaches, nightlife, or easy charm.