It consequently became necessary, in keeping with the aesthetic spirit of the whole Dufferin scheme, to fill up in some way this unsightly gap without interfering with the traffic. It was finally decided to erect here one of the proposed memorial gates, which is altogether therefore an addition to the number of the existing gates or their intended substitutes. This edifice, has been designed to do homage to the memory of Edward, Duke of Kent, the father of Queen Victoria. This gate will be the most imposing of all in the entire circuit of the fortifications, while it has had the signal honour of further being reserved for a handsome subscription towards its cost from Her Majesty's privy purse and dedication at the hands of H. R. H. the Princess, who laid its corner stone with appropriate ceremonial during the month of June, 1879. _THE CITADEL GATES._ Besides the foregoing, however, the fortress possesses in reality two other gates of much interest to the stranger. When the famous Citadel, commanding the entire harbour and surrounding country, was constructed on Cape Diamond, the number of existing gates was increased from five to seven by the erection of the Chain and Dalhousie, or Citadel gates, leading to that great fortalice of British power, which may be aptly styled the _summum opus_ of the magnificent but costly system of strategic works that has earned for Quebec its title of the Gibraltar of America. But, as these belong to the Citadel, which is an independent stronghold of itself, rather than to the defensive works of the city proper, it suffices to mention that they were erected under the administration of the Earl of Dalhousie, in 1827, and that they are well worthy of a visit of inspection--the one being a handsome and formidable barrier of its class and the other of very massive construction and considerable depth.