Fahadan neighborhood is the oldest neighborhood in Yazd, which is said to be the living place of the lords in the past. Four military leaders in the year 1040, created a fence containing towers and forts around the area. The neighborhood of Fahadan is also significant in terms of location. In the south, Baazar No and Vaght o Saat Square, and in the west Shah Abolqasem tomb and Kooshk-e No are located. Significant buildings are located in this neighborhood as well, such as Malekzadeh house, the tomb of Sheikh Ahmad Fahadan, Fahadan Mosque, Lari's House, Chehel Mehrab Mosque, Saheb al Zaman mosque, Imamzadeh Seyyed Tajeddin (Seyed Penhan), Abolmaali Bath, Alexander's Prison (Zendan-e-Eskandar), Fahadan water storage, Tehrani House, Mahd-e-Quran, Navab Vakil House, Sagha Mosque, Mirzadeh House, Mahmoudi's House, Ghadamgah Mosque, Husseinieh Fahadan, and the oldest historical monument of Yazd, tomb of the 12 Imams which dates back to Seljuk era, that its architecture and brick dome are considered as the masterpieces of those days.