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Trafalgar Square history: the missing king
Trafalgar Square is missing a king. His plinth is still waiting for him. Why did he never come? Walk his way with me. It was built for William the Fourth, up on a horse. Stop one: Buckingham Palace. William wanted none of its grandeur, and tried to give it away to Parliament. They said no, thanks. But at stop two, Westminster Abbey, he tried to skip something bigger: his own coronation. Talked into it, he took a cut-price one, an eighth of his brother's bill. London called it the Half-Crownation. Stop three, Trafalgar Square. Four years after he died, they built his plinth. On the terrace by the National Gallery, face Nelson and look right: that corner is his. Then the money for his horse ran out. London saved on its thriftiest king.
If you go: On the terrace in front of the National Gallery, face Nelson's Column and look right: the plinth in that north-west corner was built for William IV's statue, and today it carries a rotating modern artwork instead.
Sources: Wikipedia: Fourth plinth · Wikipedia: William IV of the United Kingdom · Wikipedia: Buckingham Palace · Wikipedia: History of the Palace of Westminster · gedmartin.net · Wikipedia: Coronation of William IV and Adelaide · westminster-abbey.org