New Fourth Plinth artworks revealed
7 February 2014 Last updated at 22:01 GMT
A skeletal riderless horse and a 10-metre thumbs up are the latest works that will take their place on the fourth plinth in Trafalgar Square.
Gift Horse, with an electronic ribbon tied to its leg displaying live Stock Exchange prices, is by German Hans Haacke and will be unveiled next year.
While David Shrigley's bronze thumbs up - titled Really Good - will be unveiled in 2016.
BBC London's Wendy Hurrell spoke with artist Mr Shrigley and Ekow Eshun, the chair of the Fourth Plinth Commissioning Group.