As the sun sets on a cloudy London day, the lights of Tower Bridge flicker on. The famous white and blue landmark shimmers gold and violet in the modern lights. The water is still and calm, smooth sailing for the boaters this evening. Some 40,000 commuters will use this bridge today, but from this distance, it appears quiet and at ease, poised for the watchman's command to raise the bascules.
One of the few suspension bridges in the world to include a fully operational drawbridge, Tower Bridge is a feat of engineering and architectural design.