The Sibu Old Mosque located at Jalan Kampung Nyabor is probably the oldest structure still standing in Sibu town. This mosque has been selected as one of the heritage site for the newly launched Sibu Heritage Trail.
This mosque was built before the White Rajah's time, probably in the 1830s by Tuan Haji Salam Minangkabau from Indonesia.
The original building was constructed of timber and leaf attap but it constantly evolved as the Muslim community grew and prospered.
The form of this house of worship remain unchanged; the three level limas roof is in line with the traditional architecture of the 19th century. The mosque still remain relevant to the Muslim community here and it is usually packed for the Friday Prayer.