Taq wa San or Taq-e Bostan (Kurdish: تاق وه‌ سان, "arch of stone")(Persian: طاق بستان‎, "arch of the garden") is a site with a series of large rock relief from the era of Sassanid Empire of Persia, the Iranian dynasty which ruled western Asia from 226 to 650 AD. This example of Sassanid art is located 5 km from the city center of Kermanshah in western Iran. It is located in the heart of the Zagros mountains, where it has endured almost 1,700 years of wind and rain. Originally, several sources were visible next to and below the reliefs and arches, some of which are now covered. Sources next to the reliefs still feed a large basin in front of the rock.