The Chain Bridge closely resembles London's Thames Bridge because both were designed by Tierney Clark and built by the Scottish engineer Adam Clark (no relation). Adam Clark also built the 350 meter long tunnel under Castle Hill.
Chain Bridge from Castle Hill
The Chain Bridge or Széchenyi lánchíd was the first permanent river crossing to connect Pest and Buda. The 375 meter bridge was opened on 20 November 1849. It was destroyed by the Germans late in World War II, rebuilt, and reopened in 1949. The floodlights on the bridge were added in 1999 to mark the 150th anniversary of the bridge.