When you visit London there is one bridge you should visit. The London Tower Bridge was built between 1886 and 1894. For its time it’s a marble of engineering. Because it uses a gravity-powered battery, it could be operated using … Read More

  Many people thought it would be impossible to cross the San Francisco Bay other than by boat. Until 1937, when this bridge was opened. Many photos have been taken of this bridge since. Here are some of ours. More … Read More