sentences:  And finally, the Dutch colonial changed the name to Van Der Wijck Fortress.The fortress has octagon shape with 7,168 square meters, 10-meter height and 1.4-meter wall depth in 2-storey.Geographically, Kebumen is located at 7 ° 27 '- 7 ° 50' south latitude and 109 ° 22 '- 109 ° 50' east longitude.