Complex sentence: The city's biggest draw remains its historic center, partially listed as a UNESCO World Heritage Site, and its cultural and entertainment hub can be found across the city's natural harbor, the Golden Horn, in the Beyoğlu district.
Split into simpler sentences: The city's biggest draw remains its historic center, partially listed as a UNESCO World Heritage Site. Its cultural and entertainment hub is across the city's natural harbor, the Golden Horn, in the Beyoğlu district.