The most convenient way to explore Pontianak is either by taxi or rented car. The entire Pontianak is integrated by road link, parts of which are not well maintained. There are also plenty of cheap IDR2,000 public buses but sometimes it can be kind of adventure to use them since the buses are not well marked, drivers and most of the locals do not speak English and the orientation is difficult. Also there are boats crossing the river and this is in general the most convenient and the cheapest IDR1,000 way to get in to the other side.
