Pahlevani and zourkhaneh rituals is the name inscribed by UNESCO for varzesh-e pahlavāni (Persian: آیین پهلوانی و زورخانه‌ای‎, “heroic sport”) or varzesh-e bāstāni (ورزش باستانی; varzeš-e bāstānī, “ancient sport”), a traditional system of athletics originally used to train warriors in Iran (Persia) and adjacent lands. It combines martial arts, calisthenics, strength training and music. Recognized by UNESCO as the world’s longest-running form of such training, it fuses elements of pre-Islamic Persian culture (particularly ZoroastrianismMithraism and Gnosticism) with the spirituality of Shia Islamand sufism. Practiced in a domed structure called the zurkhāneh, training sessions consist mainly of ritual gymnastic movements and climax with the core of combat practice, a form of submission-grappling called koshti pahlavāni. (source wikipedia)

Federico Spinetti, who is the Editor of a highly recommended book Music, Sound, and Architecture in Islam made a very interestig documentary about Zurkhaneh which can be found here online: Zurkhaneh – The House of Strength