This document provides brief histories of several important architectural sites from Bengal, including the Adina Mosque, Chamkatti Masjid, Dakhil Darwaja gateway, Firoz Minar tower, Kotwali Darwaja gateway, Lottan Masjid, Qadam Rasul Masjid, Tantipara Masjid, EklaKhi Mausoleum, and Qutub Sahi Masjid. The Adina Mosque, built in 1369 AD, is highlighted as the most remarkable existing example of Muslim architecture from that period in Bengal. The other sites are described as significant examples of regional Islamic architecture from the 15th century or earlier, incorporating local styles along with Islamic influences.