If you are in Samarinda, do not forget to visit Tenggarong Fantasy World, an amusement park located in Kumala Island exactly at the centre of Mahakam River. On the boat-like island an amusement park of 85 hectare wide was established in 2002.

The island used to be a place for hundreds of monkey and wild reptiles. Then in 2002, the Kukar Local Government decided this island should become an amusement park, including resorts.

On the island there are about 10 rides similar to Dufan (in Jakarta). There is the 78 metres high Sky Tower (from here you can see the whole of Kumala Island and Tenggarong City), merry-go-round, jet coaster, go-kart, gondola lifts, etc. You need to pay at each ride separately, from IDR 1,500 to IDR 10,000. For those who don't like the amusement rides but prefer fishing, Kumala Island has a fishing area also.

A tour car goes around the island making it easy to visit all the different rides and places, it only costs IDR 4,000 per person or you can rent the whole car for IDR 20,000.

Source:
https://utiket.com/