About 3km north of the centre, the Museum Geologi is a good place to get to grips with all matters geological and volcanic in Indonesia, though there’s almost no information in English. Nevertheless it’s worth an hour or so poking around the lava stones, crystals and bones that include a model of Tyrannosaurus rex and a mammoth. From the train station you can take an angkot bound for Sadang Serang and get off at the Gedung Sate (Regional Government) complex, about 300m from the museum.