The International Museum of the Horse celebrated here on Saturday evening the opening of "Exhibition of Gift from the Desert for Arab Thoroughbred Horses and their History" to visitors organized by Saudi Equestrian Federation and Fund, coinciding with the upcoming World Equestrian Championship, to be hosted by Kentucky state next September. The Exhibition was officially inaugurated last Thursday and will be opened until October 15. A large number of visitors expressed their admiration of artistic and heritage contents of the Exhibition which are collected from 28 museums and exhibitions in 19 countries.