The fourth plinth is the northwest plinth in Trafalgar Square in central London. It was originally intended to hold an equestrian statue of William IV, but remained empty due to lack of funds. For over 150 years, its use was debated; in 1998, the Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA) commissioned three contemporary sculptures to be displayed temporarily on the plinth. Shortly afterwards, Chris Smith, Secretary of State for Culture, Media and Sport, commissioned Sir John Mortimer to seek opinions from public art commissioners, critics and members of the public as to its future. Mortimer's final report recommended that there continue to be a rolling programme of commissioned temporary artworks rather than settle permanently on one figure or idea.
In 2003, the ownership of Trafalgar Square was transferred from Westminster City Council to the Mayor of London and this marked the beginning of the Mayor of London's Fourth Plinth Commission as it is now known.
There is a plinth at each of the four corners of the square. The two southern plinths carry sculptures of Henry Havelock and Charles James Napier. The northern plinths are larger than those in the southern corners, as they were designed to have equestrian statues, and indeed the northeastern plinth has one of George IV. The fourth plinth on the northwest corner, designed by Sir Charles Barry and built in 1841, was intended to hold an equestrian statue of William IV but remained empty due to insufficient funds.
In 1998, the RSA conceived the Fourth Plinth Project, which temporarily occupied the plinth with a succession of works commissioned and established by the Cass Sculpture Foundation. These were:
A committee convened to consider the RSA's late-1990s project concluded that it had been a success and "unanimously recommended that the plinth should continue to be used for an ongoing series of temporary works of art commissioned from leading national and international artists". After several years in which the plinth stood empty, the new Greater London Authority assumed responsibility for Trafalgar Square and the fourth plinth.
The Fourth Plinth Commission is led by the Mayor of London's Culture Team, under the guidance of the Fourth Plinth Commissioning Group. The group is made up of specialist advisers appointed to guide and monitor the commissions for the plinth.
Under the stewardship of the Fourth Plinth Commissioning Group, the following artworks have been commissioned:
The best use of the fourth plinth remains the subject of debate and discussion. Proposals for permanent statues have included:
Commercial companies have used the plinth, usually without permission, as a platform for publicity stunts, including a model of David Beckham by Madame Tussauds during the 2002 FIFA World Cup. The London-based American harmonica player Larry Adler jokingly suggested erecting a statue of Moby-Dick, which would then be called the "Plinth of Whales". A television ident for the British TV station Channel 4 shows a CGI Channel 4 logo on top of the fourth plinth.
The annual Fourth Plinth Schools Award is the education project within the Mayor of London's Fourth Plinth Programme. The award uses the Fourth Plinth as an inspiration to engage primary and secondary schools in London to enter a competition that encourages creative thinking around past and present artworks displayed on the Fourth Plinth.
In Sir Arthur Conan Doyle's 1912 novel The Lost World, the narrator speculates that Professor Challenger "in his fancy, may ... see himself sometimes, gracing the vacant pedestal in Trafalgar Square".