These castles are located in the south west of the Abuzar Sq. of Semnan. Some believe the same to be related to the Taherian period. The western castle of Pachenar with an elevation of over 13 m. has two round watch towers to the radius of 2 m. This castle is in two floors which are irregular and presently a few families live there.
The eastern castle is smaller than the other one and only has one watch tower in a semi-ruined state. In the former castle, sun baked bricks large in size in addition to stone was used for construction. Whereas in the latter sun baked bricks have only been used.