London Bridge is an offshore natural arch in the Port Campbell National Park, Australia. The arch is a significant tourist attraction along the Great Ocean Road near Port Campbell in Victoria. The stack was formed by a gradual process of erosion, and until 1990 formed a complete double-span natural bridge.
The span closer to the shoreline collapsed unexpectedly on the evening of Monday 15 January 1990, sparking comparisons with a well-known nursery rhyme and leaving two tourists (cousins Kelli Harrison and David Darrington) stranded on the outer span. They were rescued by police helicopter, and no one was injured in the event.