Al-Ghail Castle was called by this name, which is the name of one of the suburbs of the city of Kalba, which is located near it. It was built at the beginning of the nineteenth century, with the aim of protecting the local population, and passing caravans from bandits, where the large circular watchtower stands out, at the top of the hill and around it the high walls of the building. Visitors can enter the castle and view the museum's unique artifacts, for a set entrance fee.