Imāmzādeh Sāleh is one of Imāmzadeh mosques in Iran. The mosque is located at Tajrish Square in Tehran's northern Shemiran district. The mosque entombs the remains of Sāleh, a son of the Twelver Shī‘ah Imām, Mūsā al-Kādhim, and is one of the most popular Shī‘ah shrines in northern Tehran.
http://en.wikipedia.org/