Galata Dervish House - the room where traditional whirling dervishes perform in the oldest lodge in Istanbul, established 1491. Mevlevi order of Sufis—followers of Jalal ad-Din Rumi founded in 1273—employ whirling (sema) as a form of prayer. Building houses Museum of Divan Poetry, 15th- to 18th-century ritualized Ottoman poetry.

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