The old city of Batavia, or officially known as "Kota Tua"(Jakarta Old Town). It mainly consists of Dutch colonial buildings that were built during the 17th century. Here you can explore local street markets, various museums and enjoy local coffee shops, including the most famous one called "Cafe Batavia".
Not too far from Kota Tua, is the Old Port area called "Sunda Kelapa". It is one of the interesting attractions to visit especially for travel photographers.
Located near to JI EXPO (the exhibition venue) is Jakarta'svery own amusement slash theme park complex. Although it is mostly enjoyed by the locals, inside the area you can find some of the city's most famous seafood restaurants offering fresh seafood and scenic sea view that many tourists do enjoy.
Yes, even though most people visit Jakarta for businesses, the city does offer many other different activities and places that are also worth seeing and fun to experience depending on your preferences. Should you like history and monuments, you can pay a quick visit to Monas which is the National Monument of Indonesia. If you are a fan of shopping malls, Jakarta has plenty of big and popular malls in the city area such as in Thamrin, Senayan, and Kuningan. For island hoppers, you can visit the "Thousand Islands" which is accessible via the Ancol Pier.
Other than that, make sure you check out Jakarta's best restaurants, cafe and bars! A taste of Indonesia's coffee and food is surely something you do not want to miss.