City of London - Landmarks - Skyscrapers and tall buildings

Reference 1: Years as tallest, Height to roof (m), Height to roof (ft) and Floors.

Reference 2: Leadenhall Building, Heron Tower, Tower 42, CityPoint, St Paul's Cathedral, St Mary-le-Bow, Monument to the Great Fire of London and Old St Paul's Cathedral.

Source: http://en.wikipedia.org/wiki/City_of_London