The Al Jem Colosseum was built in the 3rd century AD, is a famous and brilliant building left by the ancient Roman Empire in Africa, and is the third largest Colosseum in the world! The Colosseum has tall arcade walls, beautiful stone carvings, towering columns, and arches that are the symbols and symbols of the Roman Empire's existence in Africa. Through a dark passage down to the underground of the Colosseum, in the center of the Colosseum, above the passage is a layer of iron windows with a little light, and there are cellars lined on both sides, which are closed to the beasts and gladiators preparing for life and death. Down the steps to the highest floor of the auditorium, overlooking the Colosseum, the staircase-style seating, densely packed, the Colosseum is the "City of Death and Amusement", which has staged the world's cruelest and most bloody drama. The Colosseum is 36 meters high and can accommodate 40,000 people. The Roman architecture is superb and exquisite and amazing. Overlooking the Colosseum, Spartacus, Binxu, Gladiator immediately appeared in my mind. The scene of bloody violence can not help but make people creepy. See the world at the edge.