Castillo de San Juan Bautista (castle) built

1641 CE.

Shown on the map at 28.456°, -16.253°.

The Castle of St John the Baptist (Spanish: Castillo de San Juan Bautista), also called the Black Castle (Castillo Negro), is a fort on the island of Tenerife in the Canary Islands of Spain. It was the second-most important fort in the defence of Santa Cruz de Tenerife, the island's capital. It is located in the heart of the capital near the Parque Marítimo César Manrique and behind the Auditorio de Tenerife. Its construction was started in 1641 and completed in 1644. It was later rebuilt in 1765 with the addition of a cylindrical tower facing the sea. It served as a military fort until 1924. It was converted to a military museum in 1948. In 1684, Charles II of Spain gave the power to appoint the castilian, or warden of the castle, to the Cabildo de Tenerife, the island's governing body.

Text from the Wikipedia article Castle of St John the Baptist, licensed CC BY-SA 4.0.

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