The President visited the Suffragette Memorial in London's Christchurch Gardens.
The bronze sculpture commemorates the women who fought for women's right to vote.
This year marks the centenary of Irish women getting the vote and the right to stand in elections. After decades of campaigning, some women in Great Britain and Ireland – those over 30 who owned property or who were university graduates – gained the right to vote in 1918, through the passing of the Representation of People Act.