 The sinking of the Venetian house at the climax of the film featured the largest rig ever built for a Bond film . For the scene involving Bond following Vesper into the house undergoing renovation supported by inflatable balloons , a tank was constructed at the 007 stage at Pinewood , consisting of a Venetian piazza and the interior of the three @-@ story dilapidated house . The rig , weighing some 90 tons , incorporated electronics with hydraulic valves which were closely controlled by computer because of the dynamic movement within the system on its two axes . The same computer system also controlled the exterior model which the effects team built to one @-@ third scale to film the building eventually collapsing into the Venetian canal . The model elevator within the rig could be immersed in 19 feet ( 5 @.@ 8 m ) of water , and used banks of compressors to strictly regulate movement . 
