An important political and religious centre that predates Tehran, Shahr-e Rey lies just to the south of the capital, and is accessible by the metro (it’s the most southerly station). Its highlights include a quaint traditional bazaar, the ruins of a Sassanian fortress, and a Seljuk tomb, but the main draw is the Imamzadeh Shah Abdol Azim, a shrine for a descendent of the second Shia Imam which attracts pilgrims all year round.