London Tower Bridge is a suspension bridge. It was originally a wooden bridge, then a stone bridge. Now it is a cement structure bridge with six lanes. [1][2] The bridge under the Tower Bridge in London can be opened. The two bridge foundations in the river are 7.6 meters high and 76 meters apart. There are two tall square main towers on the bridge foundation. They are five-storey square towers of granite and steel structure, 43.455 meters high. There are white marble roofs and five small minarets on the two main towers, which look like two crowns in the distance. The span between the towers is more than 60 meters, and the towers are connected by steel cable suspension bridges on both sides. The bridge body is divided into upper and lower layers. The upper layer (about 42 meters above the high tide level) is a wide suspended sidewalk with glass windows on both sides. Pedestrians can pass through the bridge to enjoy the beautiful scenery on both sides of the Thames River. The lower layer can be used by vehicles. When tens of thousands of tons of ships pass through the Thames River, the machine in the main tower starts, the bridge body slowly separates and folds upward. After the ship passes, the bridge body slowly falls down and resumes the traffic. Two movable decks, each weighing 1000 tons. Looking at the tower bridge from a distance, the twin towers are very magnificent. The bridge tower is equipped with stairs, museums, exhibition halls, shops, bars and so on. From the top of the tower, you can enjoy the 10-mile scenery of the upper and lower reaches of the Thames River. If encounter mist lock bridge, the landscape is even more unique, mist lock tower bridge is one of the attractions of London.