3588449 Whirling Dervishes, c.1730 (oil on canvas) by Vanmour, Jean Baptiste (1671-1737); 76x101 cm; Rijksmuseum, Amsterdam, The Netherlands; (add.info.: Twice a week dervishes performed a dance ceremony when they tried to enter a trance through prayer, music and swirling ecstatic dance, which visitors were allowed to watch (including here Patrona Halil, leader of the Tulip Revolution of 1730 and Muslu Bese) Mevlevi derwishen, followers of philosopher and mystic poet Jalal ad-Din Rumi (1207-1273) aka Mevlana, "our master" lived in tekkes or Mevlevihanesi. Vanmour painted the Mevlevihane near Palais de Hollande in Pera, the oldest in the city, consisting of a prayer or dance hall (semahane) ); French, out of copyright.