Helloindonesia.id – Are you familiar with the Sultanate of Bulungan? Some people may feel unfamiliar with the sultanate that used to exist in the province of North Kalimantan. One of the remaining traces of the Sultanate of Bulungan that can still be seen today is the Bulungan Sultanate Museum located in Tanjung Palas, North Kalimantan. […]

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