The charm of Istanbul is not only underground on the ground but also wonderful Yelebatan underground reservoir is once the Ottoman Empire underground reservoir is very large, can store 100,000 tons of water can be called one of Istanbul's most mysterious attractions by 336 carved The stone pillars support the very mysterious under the dim light. At the end of the water palace, there are two huge statues of the female demon Medusa. The water palace adds a touch of ancient Greek mythology. You can find a lot of Turkish-style silk scarves and spices in the Grand Bazaar in Istanbul. Mosaics and a variety of unique goods and handicrafts with Turkish national characteristics