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The Great Basilica of Pliska (Bulgarian: Голяма базилика в Плиска, romanized: Golyama bazilika v Pliska) is an architectural complex in Pliska, the first capital of the First Bulgarian Empire, which includes the cathedral, an archbishop's palace and a monastery. The basilica was constructed on the orders of the knyaz of Bulgaria, Boris I (r. 852–889), after his baptism in 864 and the resultant Christianization of Bulgaria. Completed around 875, the basilica was 102.5 metres (336 ft) long and 30 metres (98 ft) wide.