Millennium Bridge, London people walking caused small sideways oscillations in the bridge, which in turn caused people on the bridge to sway in step, increasing the amplitude of the bridge oscillations and continually reinforcing the effect. On the day of opening, the bridge was crossed by 90,000 people, with up to 2,000 on the bridge at any one time. Resonant vibrational modes due to vertical loads (such as trains, traffic, pedestrians) and wind loads are well understood in bridge design. In the case of the Millennium Bridge, because the lateral motion caused the pedestrians loading the bridge to directly participate with the bridge,
The London Bridge Experience built by Peter de Colechurch, the John Rennie Victorian bridge (which has now been relocated to Lake Havasu in Arizona, United States), ending with the current modern bridge opened by Queen Elizabeth II in 1971. In 2012, The London Bridge Experience introduced an "audio-wand" feature, so foreign customers are able to listen to the show in their own language. This includes German, Spanish, Italian, Polish, and French. There is a sister attraction, "The London Tombs" which is included in the admission price. This is a scare attraction built in the remains of a former plague pit. This part of the