The quadrangular structure has a number of rooms, surrounded with porticos and a trench, which was filled with water and used to protect the building from attacks.

The monument was constructed with high quality materials and fortified with mortar and three-coat plastering.

Findings show that the building previously had beautiful architectural decorations and was ruined during battles.

The first phase of Natel archeological excavations also yielded a six-meter deep trench, built with large stones, mud, lime and plaster, which surrounds the entire city.

The city of Natel, located at the heart of Iran s northern forests and west of Mazanadran Province, was destroyed during the Safavid era.