US president Barack Obama presented a Q&A session at the Royal Horticultural Halls in London on Saturday, where he continued to discuss his support of Britain staying in the European Union.
He urged young people to "reject pessimism and cynicism" and answered questions on the EU's involvement with the controversial Transatlantic Trade and Investment Partnership.
As part of events commemorating 400 years since the death of William Shakespeare, on Saturday morning Obama visited the Globe theatre, a replica of where many of his plays were originally performed.
There was a very strong police presence ahead of the president's visit to the historic theatre.
Ahead of dinner at with the Duke and Duchess of Cambridge and Prince Harry at Kensington Palace on Friday, the Obamas were introduced to Prince George.
Prince George was wearing pyjamas.
President Obama held a joint press conference with prime minister David Cameron at Downing Street on Friday afternoon, where he expanded on his support for Britain remaining in the EU.
Earlier on Friday the Obamas met the Queen, a day after she celebrated her 90th birthday.
They were greeted at Windsor Castle by the Queen and Prince Philip ahead of a private lunch on Friday afternoon.
Prince Philip drove the Obamas and the Queen into Windsor Castle shortly after they arrived.
President Obama and first lady Michelle Obama had arrived in Britain on Thursday.
Laura Gallant is a staff photographer for BuzzFeed UK and is based in London.
Matthew Champion is a deputy world news editor for BuzzFeed News and is based in London.
Contact Matthew Champion at firstname.lastname@example.org.
Laura Silver is a reporter for BuzzFeed News and is based in London.
Contact Laura Silver at email@example.com.
Got a confidential tip? Submit it here.