Impossible to skip! All guides will take you around Old Batavia (with the remains of the Dutch colonial city) and suddenly you'll be in Sunda Kelapa: the old port of Jakarta. Sunda Kelap has played a significant role in the development of the Indonesian archipelago (with over 18.000 islands). Nowadays it is only a minor port, accomodating dozens of "pinisi", the traditional two masted wooden sailing ship servicing the islands. Although its historical importance, the area is filthy and dusty. I had a guide, but it didn't add much to the visit. So, if you have the chance, just drive around and it's done.
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