The column is one of the most famous archaeological landmarks of Alexandria, and it is the only archaeological landmark that was built outside the imperial capitals, Karma and Constantinople. It is made of red granite, and the column was built in honor of Emperor Diocletian in the third century AD. It is one of the largest monolithic and ancient columns of all time. You can see it from the outside or enter the walkways of the cold floor, it is a great landmark to spend a good time learning about the history of Alexandria and taking souvenir photos with family and friends.