Trafalgar Square

Greenpeace activists scale Nelson's colomn in protest over pollution levels.

Andy Rain/EPA

An activist from the enviromental oganisation Greenpeace attaches a replica gas mask to the face of the statue of Nelson on Nelson’s column during a protest in Trafalgar Square, London. Greenpeace activists scaled numerous statues across the capital to highlight dangerous levels of pollution.

The Six New Proposed Artworks For The Fourth Plinth Are Unveiled...LONDON, ENGLAND - SEPTEMBER 24:  Ekow Eshun, Chair of the judges looks a model of 'Gift Horse' by Hans Haacke as it is unveiled as a proposed design for the Fourth Plinth at  the Crypt, St Martin-in-the-Feilds on September 24, 2013 in London, England. The two selected artists will be announced in early 2014, and their works will be unveiled in Trafalgar Square in 2015 and 2016 respectively. (Photo by Bethany Clarke/Getty Images)

Bethany Clarke/Getty

Ekow Eshun, chair of the judges, looks a model of ‘Gift Horse’ by Hans Haacke as it is unveiled as a proposed design for the Fourth Plinth at Trafalgar Square in London. Two selected artists will be announced in early 2014, and their works will be unveiled in Trafalgar Square in 2015 and 2016 respectively. 

A blue French cockerel by German artist Katharina Fritsch is unveiled on top of the forth plinth in Trafalgar Square

Dan Kitwood/Getty Images

A blue French cockerel by German artist Katharina Fritsch is unveiled in Trafalgar Square in London, England. The five-metre high fibreglass cockerel was installed as the ninth sculpture to occupy the vacant fourth plinth in Trafalgar Square.