The Historical site of Tagh-e Bostan or (Taq-e Bostan) is situated in Kermanshah City in Iran. Taq means an Arch and Bostan means A very beautiful garden. Thus, Taq-e Bostan means an Arch of a very beautiful garden. The appellation of taq or arch here refers to two ancient arch from Sassanid dynasty in Iran. Tagh-e Bostan is consists of the big arch, small arch and a plate of stone inscription outside the cave. These two arches have been carved out of stone in the mountain. Outside the big cave there are two winged angels holding a medallion. Inside the cave there are many carvings including a big horse and a rider which is “Khosro Parviz” the king of Iran in Sassanid period.