Information for Entrance - The Tower Bridge Exhibition at Tower Bridge, Inner London (Entrance). Welcome to the world's most famous bridge. Completed in 1894, Tower Bridge was instantly hailed as a London icon and one of the great engineering marvels of its age. Come inside the icon to explore its history, uncover its secrets and enjoy stunning views of London from its spectacular high-level Walkways, 42 metres above the River Thames. Films, displays and hands-on exhibits chart the whole, fascinating history of Tower Bridge and how it has operated over the years. Victorian Engine Rooms house the original steam engines, awesome monsters whose immense power once raised the bascules of the bridge.A 'virtual bridge lift' shows how the bascules still rise today to let ships pass beneath the Walkways.