TEHRAN (FNA)- Archeologists discovered decorative tiles and ornamental brick work with Persian poem inscriptions in Iran's Alamut fortress near the northern city of Qazvin.

"The team found turquoise, azure and golden tiles, which date back to the 12th and 13th centuries," archeologist and head of the Alamut Research Center Hamideh Choubak told CHTN.

"The turquoise and azure tiles are polygonal, rectangular and star-shaped bearing animal, alphabetical characters, flower petals and arabesque patterns," she added.

According to Choubak, the golden tiles mostly bear Persian poems and Tuluth scripts dating to the 12th century.

Archeologists also found glazed and clay earthenware.

The Alamut castle was a mountain fortress located in the central Alborz Mountain range south of the Caspian Sea, about 100 km from where the Iranian capital stands today.

The fortress was built with only one passable artificial entrance that wound its way around the cliff face, making the castle extremely difficult to conquer. Today, only the ruins of the unique structure remain