Fort Emma was built in 1859 at Kanowit, where the Kanowit River meets the Rejang, and named after Emma Brooke, sister of the second Rajah. It is among the oldest surviving Brooke forts in Sarawak, and it was built for the same reason as all of them: to plant an administrative post at a river junction, because in Sarawak the rivers were the roads.
Kanowit is a small town today and the fort is a quiet stop rather than a headline attraction — which is much of its appeal. For anyone working up the Rejang towards Kapit, it completes a run of Brooke river forts with Fort Sylvia further upstream.

