Built in 1679, Kyai Gede Mosque is a treasure to behold. It was built of Ulin wood complete with complex Calligraphic carvings on its pillars. Arguably the oldest mosque in Kalimantan Tengah, the mosque bear witness to the spread of Islam in Kalimantan Tengah. Kyai Gede was a renown cleric who first came from Demak, Java via Gresik. He was a trusted figure who rose to the Prime Minister rank in the Kotawaringin and upon his death, a tomb was built in his honour.
Today, both Kyai Gede Mosque and the Tomb are places not to be missed in Kotawaringin Lama.