 The old city became deserted and was a mere empty shell of its former glory by this period.Old Batavia kept its commercial importance as the city's main harbor and warehouses district, but it was largely overshadowed by Surabaya as the colony's prime harbor and commercial hub.After the opening of the Tanjung Priok harbor and fueled by the increasing rubber output in the late 19th century, Batavia was able to regain its commercial momentum.