Kaoutar B.
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We didn't know the museum before, we found it on our way to Galata tower, and decided to discover it. (The Ticket was 50 Tl, 2.5 USD approximately)
I liked it, it shows information on the history, the culture, music, and traditions of the Mawlawi.
It wasn't our lucky day, so we didn't watch whirling Dervish ceremony although it was interesting to know the place and what it contains.