Fort de Kock
Guguak Panjang, Indonesia
Fort de Kock was a 19th-century Dutch sconce fortification established over a hill in Bukittinggi, West Sumatra, Indonesia. Around the fortification, a new settlement grew, which eventually grew into the city of Bukittinggi, the second largest city in West Sumatra. Although the remnants of the mound and some cannons can still be seen, the original buildings on top of the sconce have been demolished.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).