Tower BridgeThis bridge built in 1894, is still in daily use even though the traffic in and out of the London wharves' has increased to an extraordinary extent during the course of the 20th century.Even today Tower Bridge regulates a large part of the impressive traffic of the Port of London. Due to a special mechanism, the main traffic-way consisting of two parts fixed to two hinges at the ends can be lifted up. In this way, the entrance and departure of extremely large vessels is possible, and allows them to reach the Pool of London.Nowadays the pedestrian path is closed. This footpath crossing which used to be allowed was by the upper bridge which connected the top of each tower, situated at a height of 142 feet above the waters of the famous Thames.Tower Bridge commands wide and magnificent views of both the city and the river. After Tower Bridge, the wharves of London extend until Tilbury. The gigantic port of this city, which has one of the heaviest movements of ocean-going traffic in the entire world, occupies practically the whole of the Thames from Teddington. It is virtually impossible to get a complete idea of its colossal extention. In fact it is one wharf after another, apparently continuing endlessly.There is one way to form a closer idea of the grandiosity of this port: to view it from Tower Bridge on a clear day.