Our offical MonumentApp project for Smederevo Fortress. A web AR application that can recognize monuments and historical sites, fortresses, etc. and offers real-time information about them via mobile camera. The user can see the virtual icons live on the camera while walking, which, with the help of AR technology and GPS, stand exactly where the objects are. He can also see 3D models of medieval soldiers, personalities and objects. Our application is a smart guide live on camera, which can explore the monuments of that city or have a tour of the fortress with marked places in it such as towers, gates, etc.