The museum tells about the formation of Sharjah, the original fort was almost destroyed, but they tried to recreate and convey the atmosphere of antiquity. Separately, I want to note the work of a guide named Omar, he explained very well what other attractions are nearby, gave a guidebook with a map. I recommend a visit.
I was not very impressed with this museum. It seemed more interesting outside than inside. The territory is small, there are rooms with separate exhibits, some on the lower level, some upstairs. Admission is 10 dirhams.