Taq-e Bostan is an ancient site located in the northwestern Iranian city of Kermanshah. The site is known for its large rock reliefs dating back to the Sassanid Empire (224-651 CE), a period of Persian history renowned for its political and cultural achievements.

The main attraction of Taq-e Bostan is a series of impressive rock carvings and sculptures, including the eponymous Taq-e Bostan arch, which was carved into the cliff face and decorated with intricate depictions of hunting scenes and battles. There are also several other reliefs, including a representation of the investiture of Ardeshir II, one of the early Sassanid rulers, and a portrait of Shapur III, another Sassanid king.

In addition to the rock carvings, there are several other structures at the site, including a small pavilion, a stone tower, and a natural spring, which was used for centuries to irrigate the surrounding fields. The site is considered an important example of Sassanid art and architecture and is a popular destination for tourists and history enthusiasts visiting Iran.