Rey, Rayy, Ray, Rhages or Rages (; ; ) also known as Shahr-e-Rey (), is the oldest city in the state of Tehran, Iran. Rey today has been added into the Greater Tehran city. It is linked by the Tehran Metro to the rest of Tehran and has many industries and factories in use. A settlement began here c 6,000 BCE as part of the Central Plateau Culture. The settlement was used as a capital by the Medes called Rhaga. In classical Roman geography it was called Rhagae. Its name dates back to the pre-Median. Some historians point its building to very old storybook royal family, and some others believe that Rey was the seat of a house of Zoroastrian leader.