Muhaires castle located in Al-Ahsa governorate, at the eastern region of Saudi Arabia.

[1] the castle was built by Al-Imam Saud bin Abdul-Aziz on the top of a hill at 1208 Hijri for military purposes.

It is a small military castle consist of round towers with rooms, Weapons, supplies and ammunition were stored there.

[3] In the past, the castle consisted of two floors, built with stones and mud, and it has an external wall supported with a cylindrical tower, located in the southeast corner.

[4] In the southern wall of the castle, there is a gate to a small roofless courtyard with a water-well in the center.