The Kali Pasir Mosque is the oldest mosque in Tangerang and one of the oldest in the region, established in 1700 on the banks of the Cisadane River in the heart of what was then the Chinese quarter. It is a living document of the cultural exchange that shaped this part of Java — built by Muslims, constructed with Chinese help, and sitting in a neighbourhood that has always been majority Chinese.
The building spans about 288 square metres and retains its original four pillars and the unusual small dome with its Chinese-influenced design. Despite multiple renovations over three centuries, the essential character survives. It is still an active place of worship, so visit respectfully and at appropriate times. The mosque sits in Pasar Lama close to Boen Tek Bio and the Benteng Heritage Museum, making this corner of town an easy half-day on foot.