One of the relics left from the not so past years of Junqan town is castle or fortress of Commander As’ad. Junqan castle relates to the late 13th Hijri century, and it is located inside Junqan town, one of Farsan town environs. This tow floored building was built by Commander As’ad II Bakhtiari with inspiration from European 1900s castles in the late Qajar dynasty after Hussein Quli Ilkhanate’s offspring achieved political power.
This castle which is known as the fortress of Commander As’ad Bakhtiari owes its fame to the constitution and the start of Bakhtiari’s revolution in Junqan, one of Farsan town environs and gathering in this fortress and then conquer of Isfahan and Tehran. People of Junqan and other Bakhtiari residents of other places started their movement from this place and succeeded in conquering Isfahan and Tehran.
This relic was registered in December 26th, 1977 as one of Iran’s national relics with the registration number of 1548. This historical building is now being visited with the title of the house of constitution.