It’s Trafalgar Square but not as we know it. In a new Wednesday series we’re looking at eight proposed structures in London that were never realised and first up, is a proposal which would have seen a 300 foot high pyramid on what has become one of the city’s most iconic sites.

The stepped pyramid was the brainchild of an early 19th century Tory MP, Colonel (later General) Sir Frederick William Trench, and was designed in 1815 as a grand military and naval memorial to the Napoleonic Wars with each of the structure’s 22 steps apparently dedicated to a different year of the war.

Apparently drawn up by architects Philip and Matthew Cotes Wyatt – of the famous Wyatt architectural dynasty, the pyramid – which would have been taller than St Paul’s Cathedral and pretty much covered the entire space now occupied by the square – was, according to Nick Rennison’s The Book of Lists, costed at £1 million, a figure Sir Frederick – a veteran of the wars – apparently thought was not unreasonable.

But it didn’t prove a popular design with the public and got no further than the drawing board.

Among Sir Frederick’s other unrealised dreams was an elevated railroad running between London and Hungerford Bridges, an immense new royal palace which would have covered much of the West End, and an embankment – ‘Trench’s Terrace’ – along the north bank of the Thames. An embankment was, of course, later built, but not until after his death in 1859.